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College Network Anatomy and Physiology I practice exam
Anatomy and physiology I practice exam questions
160
Nursing
Undergraduate 2
10/02/2012

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Term
In the anatomical position
Definition

the subject is erect with head facing forward

    feet only slightly apart

resembles standing at attention with palms facing forward and thumbs pointing away from the body

Term
The appendicular region of the body refers to
Definition
arms, hands, legs, feet
Term
2 structures that are on the same side of the body are
Definition
ipsilateral
Term
Stem cells
Definition
are found in tissues that exhibit regeneration
Term
The framework for almost every tissue composed of
Definition
connective tissue proper
Term
2 subdivisions of blood are
Definition
plasma and formed elements
Term
According to the principle of negative feedback,
Definition
detection of deviation from the set point value drives changes that minimize the deviation
Term
The cells in the skin that are responsible for color are
Definition
melanocytes
Term
Homeostasis in the human body is valuable because
Definition
it provides a regulated environment in which cells can perform their specialized functions
Term
the Nernst equation is used to
Definition
calculate the voltage of an electrochemical cell or to find the concentration of one of the components of the cell.
Term
The Nernst equation (written for K+ for example, as EK+=RT/zF in ([K+]extracellular/[K+]intracellular) expresses a mathematical relationship between
Definition
electrical and chemical energy
Term
What 2 factors make K+ more important than Na+ in determining the resting potential?
Definition
The membrane is more permeable to K+, and the concentration gradient is higher for K+
Term
Endocytosis
Definition
is a mechanism for removing surface receptors
Term
Osmosis
Definition
is the diffusion of water from areas of higher water concentration to areas of lower water concentration
Term
The subatomic particle that is uncharged is
Definition
the neutron
Term
To be radioactive, an element must
Definition
undergo a decay process, emitting high-energy particles from its nucleus
Term
Which of the following is present in highest concetration in cytoplasm?
Definition
K+
Term
One of the consequences of the fact that water is polar covalent compound is that
Definition
interactions between the molecules result in surface tension
Term
valence is defined as
Definition
how many electrons the element can accept or donate
Term
pulmonary surfactant
Definition
reduces the surface tension in the lungs
Term
Hydrogen bonds
Definition
form between hydrogens bonded to nitrogen or oxygen
Term
Enzymes are
Definition
proteins that act as catalysts to promote reactions at body temperature.
Term
Bone is a tissue that
Definition
is constantly being remdoled by osteoblasts that absorb bone and osteoclasts that deposit bone
Term
Bones that continue to grow throughout adulthood include
Definition
flat bones of the face
Term
Externally, bones are described by
Definition
features that relate to their shape and function
Term
Circumduction is a term that describes what sort of movement?
Definition
describing a cone in space
Term
The "leg" is properly defined as
Definition
the part of the lower limb from knee to the ankle
Term
A long bone, such as a leg bone,
Definition
grows during development in the region called an epiphyseal plate
Term
supination is
Definition
rotation of the arm so that the palm faces anteriorly
Term
The head of the humerus articulates with
Definition
The glenoid cavity of the scapula
Term
The origin of the biceps muscle is
Definition
the coracoid process
Term
The muscle type that is characterized by small cells and no striations is
Definition
smooth
Term
Muscle cells or fibers are each wrapped in connective tissue called the
Definition
endomysium
Term
The voltage sensors of the T-tubular endfeet are
Definition
regulate the Ca++ release channels
Term
repetetive stimulation of muscle can produce a smooth rise in tension or contraction
Definition
that is called a tetanus
Term
the more moveable attachment of a muscle is called its
Definition
insertion
Term
For the first few seconds of muscle contraction
Definition
a ready reserve of energy is available in the form of creatin phosphate
Term
In excitation contraction coupling
Definition
Ca++ is released from the sarcoplasmic reticulum in response to the action potential
Term
The functional category of neurons that is responsible for neural integration is
Definition
the interneurons
Term
The cells of the nervous system that are not neurons are
Definition
the glia
Term
The inside of the cell has
Definition
a high internal concentration of K+
Term
The membrane potential
Definition
can become more inside-negative, which is called depolarization
Term
The system that provides information about the state of the internal orgains is
Definition
the visceral sensory system
Term
The role of Ca++ in chemical synaptic transmission is
Definition
to bind to the neurotransmitter molecules
Term
a nerve
Definition
is enclosed in a sheath of epineurium
Term
the hypothalamus
Definition
is where temperature is regulated
Term
in comparing the sympathetic and parasympathetic branches, it is true that
Definition
the transmitter released by preganglionic cells in both divisions is acetylcholine
Term
a sensory modality refers to
Definition
what kind of stimulus the receptors are most sensitive to
Term
the photoreceptor type that is responsible for color vision is the
Definition
cone
Term
we localize sound by its
Definition
time of arrival and intensity
Term
which cranial nerves carry all the taste information?
Definition
facial and glossopharyngeal
Term

Nerves and blood vessels pass through 

Definition

openings called fossa

Term

Which of the following is not a function of the skin?

  1. protection
  2. thermoregulation
  3. somatosensory perception
  4. vitamin A synthesis
Definition
vitamin A synthesis
Term
cells responsible for wear-resistance and waterproof qualities of skin
Definition
keratinocytes
Term
stratum basale, stratum germinativum, stratum spinosum, and stratum corneum are all
Definition
layers of the epidermis
Term
in the process of embryonic development, the epidermis gives rise to three types of specialized structures
Definition

hair

nails

dermal glands

Term
the 2 types of sudoriferous glands are
Definition

eccrine sweat glands, aka merocrine sweat glands

apocrine

Term
the dermis is largely made up of connective tissue with abundant extracellular fibers of
Definition
collagen and elastin
Term
what is composed of loose connective tissue, arterioles, venules, and adipose tissue?
Definition
hypodermis
Term
As long as the temperature  of the body surface exceeds that of the environment, heat can be lost to the environment through conduction, convection, and
Definition
radiation
Term
a bad case of sunburn with blistering is considered a form of which type of burn?
Definition
2nd degree
Term
the term for the type of carcinoma that arises from cells in the stratum spinosum is
Definition
squamous cell carcinoma
Term
The regulatory mechanisms for different body systems differ in detail but almost always involve a principle called
Definition
negative feedback
Term
cutaneous blood vessels, sweat glands, and skeletal msucles are all
Definition
effectors for thermoregulation
Term
a difference in electrical charge between the cytoplasmic and extracellular sides of the plasma membrane is called
Definition
resting potential
Term
In cellular fluid dynamics, net movement by diffusion
Definition
occurs from regions of higher to lower concentration
Term
Channels and carriers are two basic forms of
Definition
membrane spanning proteins
Term
In primary active transport, the carrier derives its energy from
Definition
adenosine triphosphate
Term
a process in which intracellular vesicles fuse with the plasma membrane and release their contents
Definition
exocytosis
Term
Pinocytosis and phagocytosis are 2 forms of
Definition
endocytosis
Term
The diffusive movement of water down a water concentration gradient is called
Definition
Term
Which type of solution contains a higher impermeant solute concetration and causes cells to shrink?
Definition
hypertonic
Term
The atomic ___ of an atom is defined as the sum of the numbers of protons and neutrons in its nucleus
Definition
weight
Term

Which one of the following is the strongest type of chemical bond?

  1. covalent
  2. hydrogen
  3. ionic
  4. nonpolar
Definition
covalent
Term
What are the 3 basic types of chemical reactions?
Definition

synthetic

decomposition

redox

Term
What is formed by the reaction of a strong acid with a strong base?
Definition
salt
Term
What contains carbon, hydrogen and oxygen in the ration of 1:2:1
Definition
carbohydrate
Term
about half of the twenty _______ commonly found in the body are essential, meaning they cannot be synthesized in teh body and must bepresent in the diet in adequate amounts to support protein synthesis
Definition
amino acids
Term
What are chains of amino acids joined by peptide bonds between the carboxylic acid group of one amino acid and the amino group of another?
Definition
proteins
Term
allosteric regulation, inhibitors and temperature are all
Definition
influences on enzyme activity
Term
What is the main difference in the bases between DNA and RNA?
Definition
in RNA, uracil appears instead of thymine
Term
The _______ is a membrane that lines the Haversian canals and contains osteoblasts and osteoprogenitor cells
Definition
endosteum
Term
_______ is the term for the widened area at each end of the bone shaft that joins the shank of the bone to its ends.
Definition
metaphysis
Term
What is the name of thestructure composed of cartilage that occupies a growth zone between the shaft and the end of a bone?
Definition
epiphyseal plate
Term
The surface features of bone are classified into which of the following three main categories?
Definition

articular surfaces

processes

depressions

Term
Elastic, fibrous and hyaline are 3 types of
Definition
cartilage
Term
Structurally, joints can be categorized as cartilaginous, fibrous, or ______.
Definition
synovial
Term

Which one of the following is not a movement of diarthrotic joints?

  1. extension
  2. rotation
  3. supination
  4. traction
Definition
traction
Term
The sella turcica, formen rotundum, and optic canal are all parts of which one of the following bones?
Definition
sphenoid
Term
The olfactory foramina, crista galli and cribriform plate are all part of the ______ bone
Definition
ethmoid
Term
Which category of vertebrae is characterized by bilateral superior facets and projecting transverse processes with facets.
Definition
thoracic
Term
the pectoral girdle is part of the _____ appendicular skeleton
Definition
upper
Term
In which 2 types of muscle is the machinery tightly organized into structures called sarcomeres?
Definition
cardiac and skeletal
Term
Which type of muscle is characterized by single (somatic) innervation
Definition
skeletal
Term
which of the following are common descriptive terms found in muscle names?
Definition

brachialis

brevis

maximus

Term

which joint is characterized by the following set of muscles:

pectoralis major

trapezius

latissimus dorsi

deltoid

triceps brachii

Definition
shoulder
Term

Which joint is characterized by the following set of muscles:

pectoralis major

trapezius

latissimus dorsi

deltoid

tricepts brachii

Definition
shoulder
Term
Which principle is described by the terms refractory period, absolute refractory period, and relative refractory period?
Definition
action potential
Term
In _____ contraction, even though tension develops in the muscle, the muscle is not allowed to shorten
Definition
isometric
Term
Which two proteins are the contractile proteins of sarcomeres?
Definition
myosin and actin
Term
for a muscle with a mixture of fiber types, the effects of _______ include significant increases in the number of myofibrils, the density of mitochondria and stored glycogen
Definition
hypertrophy
Term
Which type of muscle is characterized by structures called intercalated discs, which make end-to-end connections between the plasma membranes of adjacent fibers?
Definition
cardiac
Term
_____ muscle cells are found surrounding the walls of hollow visceral organs such as the GI tract and blood vessels
Definition
smooth
Term
cardiac muscle relies on ________ innervation
Definition
dual, or autonomic
Term
Which glands secrete on the skin an oily sebum containing antimicrobial properties but are absent from the palms and soles of the feet
Definition
sebaceous glands
Term
Suppose there are 2 rigid compartments. Once contains pure water and the other a solute of unknown concentration. A permeable barrier is placed between them. According to the principles of osmosis, in which direction will net water movement proceed, and why?
Definition
It will proceed in the direction of higher solute concentration because osmosis moves down the water concentration gradient.
Term
Which system provides information about the state of the internal organs?
Definition
the visceral sensory system
Term
What is the role of Ca++ in chemical synaptic transmission?
Definition
it causes some synaptic vesicles to fuse with the presynaptic membrane
Term
damage to the prefrontal cortex of the brain is most likely to affect
Definition
reasoning skills such as long term planning
Term
A midsaggital section divides the body into
Definition
equal right and left halves
Term
The diaphragm separates which 2 cavities?
Definition
thoracic and abdominal
Term
In which cellular organelle is ATP synthesized?
Definition
mitochondrion
Term
Suppose messenger RNA (mRNA) delivers a protein to a cell it needs to enter the cytoplasm. Which organelle will synthesize this protein?
Definition
a free ribosome
Term
Which type of epithelial cell can tolerate stretching (as in the urinary bladder?)
Definition
transitional
Term
A collection of tissue can be classified as an organ if it meets which of the following characteristics?
Definition
It is composed of at least 2 types of tissue and performs multiple functions in the body.
Term
A collection of tissue can be classified as an organ if it meets which characteristics?
Definition
It is composed of at least 2 types of tissue and performs multiple functions in the body
Term
skin cells are renewed from which epidermal layer?
Definition
stratum germinativum
Term
mammary glands are
Definition
modified sweat glands
Term
The resilient response of the skin to mechanical distortion is attributed to
Definition
the connective tissue of the dermis
Term
According to key factors which influence diffusion, the substance most likely to diffuse quickly is
Definition
a substance diffusing in a gaseous media rather than in a solution
Term
in a negative feedback system, a controller
Definition
checks variables against a predetermined setpoint
Term
in what type of environment can swelling or shrinkage of cells be avoided?
Definition
isotonic to the cytoplasm
Term
isotopes are
Definition
forms of an element that differ in the number of protons
Term
chemical bonds are formed when
Definition
electrons in the outer orbital of atoms interact
Term
a polar bond results when
Definition
the electron donor and acceptor are of unequal strength
Term
chemical bonds are formed when
Definition
electrons in the outer orbital of atoms interact
Term
a polar bond results when
Definition
two atoms of the same element form a bond, such as 2 H atoms
Term
one mole of solution of any chemical compound contains
Definition
Avogrado's number of molecules in a liter of water
Term
What happens when a donor atom donates electrons?
Definition
it is oxidized
Term
What happens if a strong acid is added to a solution buffered with bicarbonate buffer?
Definition
some of the added H+ will react with HCO3-, preventing a large decrease in pH.
Term
Blood cells are susbended in plasma, and thus, display the phenomena of a molecule in suspension. The force of gravity acting on blood held in a container will result in
Definition
settling of the suspended red blood cells to the bottom of the container
Term
A solution has a pH of 4. If a base is added
Definition
the solution's pH will increase
Term
the biggest factor in bone growth
Definition
growth factors called somatomedins that are produced in response to growth hormone
Term
the distal ends of the tibia and fibula have small projections that articulate with the talus of the foot to form the ankle joint. the name for this type of projection is a
Definition
malleolus
Term
the sella turcica partially encloses the
Definition
pituitary gland
Term
the illium, ischium, and pubis are fused bones in the
Definition
pelvic girdle
Term
where in the body will you find phalanges
Definition
the foot
Term
as a child matures, the sutures of the cranial bones become more and more
Definition
synarthrotic
Term
which facial bone forms the posterior part of the hard palate and the nasal cavity?
Definition
palatine
Term
in the gross structure of skeletal muscle, what are myofibrils?
Definition
parallel structures within each muscle fiber that constitute the actual contractile machinery
Term
which neurotransmitter is released at the neuromuscular junction?
Definition
acetylcholine
Term
what is the difference between isotonic and isometric contractions?
Definition
in an isometric contraction, the muscle is not allowed to shorten
Term
a muscle that is specialized to help maintain posture is mostly composed of which type of fiber?
Definition
Type I (red fibers)
Term
Why does exercising muscles require oxygen?
Definition
because the energy for muscle contraction results from metabolic pathways that require oxygen
Term
crossbridge cycling continues as long as
Definition
Ca++ is present
Term
in a third class lever,
Definition
effort is applied between the load and the fulcrum
Term
the upper limit to performance in sustained exercise is believed to be set by the maximum rate at which
Definition
the cardiovascular system can deliver O2 and glucose to exercising muscles
Term
where does a neuron receive inputs from other neurons?
Definition
in the dendrites
Term
when a physician taps on a patients knee to test a reflex, which type of reflex is displayed?
Definition
monosynaptic stretch reflex
Term
the primary auditory area is located in which part of the brain?
Definition
the temporal lobe
Term
a synapse is a
Definition
point of close contact between axon terminals and target cells
Term
where in a neuron is the action potential normally initiated?
Definition
at the axon hillock
Term
the spinothalamic pathway, located in the spinal cord, is responsible for carrying what kind of information?
Definition
sensation information about coarse touch, temperature and pain sensations
Term
the adrenal medullae is found in the sympathetic division of the
Definition
autonomic nervous system
Term
autonomic pathways innervate the
Definition
somatic portion of the motor system
Term
the purpose of proprioceptors is to
Definition
monitor the internal state of the body
Term
in which eye structure are photoreceptors found?
Definition
the retina
Term
the malleus is found in the
Definition
middle ear
Term
where in the vestibular system will you find perilymph?
Definition
the scala tympani
Term
what is the primary difference between taste and olfactory receptors?
Definition
taste receptors are only sensitive to a single odor or modality
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