Shared Flashcard Set

Details

Test 3
Muscles and Nerves, multiple choice only
75
Anatomy
Undergraduate 1
11/04/2009

Additional Anatomy Flashcards

 


 

Cards

Term
which one of the following statements is incorrect
Definition
e. none (skeletal muscle- move bone, striated, voluntary, attached to bone)
Term
which one of the following is incorrecorrect
Definition
cardiac muscle is non-striated
Term
which one of the following is not a function of muscle tissue
Definition
c. it helps in the synthesis of vit d
Term
t or f. each muscle s a separate organ
Definition
true
Term
the ______ separates muscle from ski and is composed of areolar conn tissue and adipose tissue
Definition
b. superficial fascia
Term
the ___ lines sthe body wall and limbs and holds muscles with similar function together, it separates muscle into func groups
Definition
d deep fascia
Term
true or false, ea skeletal muscle fiber has 100+ nucleai
Definition
true
Term
true or false myofibrils are the contractile elements of skeletal muscle
Definition
TRUE
Term
which one of the following is not a function of the superficial fascia
Definition
b. it is the main site of thermogenisis
Term
a transverse tubule + 2 terminal cisterns is called a
Definition
b. a triad
Term
thick filaments are composed of
Definition
e. none of the above (300+myosin)
Term
the ____ is the basic unit of a muscle fiber
Definition
a. sarcomere
Term
what terminates the action of acetylcholine
Definition
c. ache
Term
______ is a molecule found only in skeletal muscle fiberes; it is used to getnerate atp rapidly from adp by transfer of a phosphate group
Definition
b. creatine phosphate
Term
which one of the following situations is not one of he potential reasons for muscle fatigue
Definition
c. depletion of dihydroxyacetone phosphate
Term
most voluntary muscle contractions are smooth, sustained contractions called
Definition
b. titanic contraactions
Term
true or false a muscle's muscle tone is due to weak involuntary contractions of its motor units
Definition
true
Term
red muscle fibers have a ____ content; white muscle fibers have a _____ content
Definition
b. high myoglobin; low myoglobin
Term
____ are the smallest in diameter; they split atp at a slow rate; and, the fibers are red.
Definition
b. slow oxidative fibers
Term
______ are the largest in diameter; they provide the most powerful contractions; and they contain the larges proportion of white fibers
Definition
c. fast glycolytic fibers
Term
______ are intermediate in diameter; atp production is by aerobic respiration and glycolysis
Definition
a. fast oxidative-glycolytic fibers
Term
_____ undergo anaerobic production of atp; they are fast twitch; but, they fatigue rapidly.
Definition
c. fast glycotlytic fibers
Term
the pectoralis minor, trapezius, subclavius, and serratus anterior hold the scapula in place while the deltoid muscle (prime mover) abducts the arm. these muscles that hold the scapula in place are all acting as ____-
Definition
b. fixators
Term
which one of the following is not a characteristic of skeletal muscle tissue
Definition
d. it has relatively little sarcoplasmic ret and t-tubules
Term
which one of the following is not a characteristic of cardiac muscle
Definition
e. none of the above (it is striated, involuntary, has a single nucleus, fibers are branching)
Term
which one of the following is not a charaxteristicx of smooth muscle
Definition
d. it is multinucleate (the cells are spindle shaped, little or no sarc ret, non-striated)
Term
t or f, visceral smooth muscle cells contract as a single unit
Definition
true
Term
t or f, multiunit smooth muscle cells have few gap junctions
Definition
true
Term
_______ carry information from the brain to the spinal cord or from the brain or spinal cord into the cranial or spinal nerves
Definition
d. motor neurons
Term
_______ participate in integration
Definition
e. both b and c (interneurons and association neurons)
Term
_____ carry information from receptors to the cns through cranial and spinal nerves
Definition
a.sensory neurons
Term
the nervous system's _____ function is to analyze and store sensory information
Definition
b. integrative
Term
cranial nerves, spinal nerves ganglia and sensory recepptors are all components of the
Definition
b. pns
Term
which one of the following systems is not part of the peripheral nervous system
Definition
e. none of the above (enteric nervous system, autonomic nervous system, somatic nervous syst0
Term
t or f, the motor part of the somatic nervous system is not under conscious control
Definition
false
Term
sensory neurons of the _____ convey information from interoceptors in the visceral organs to the cns
Definition
d. autonomic nervous system
Term
the _____ speeds up the heart rate; the ____ slows down the heart rate
Definition
b sympathetic division, parasympathetic
Term
sensory neurons in the _____ monitor chemical changes within the gi tract and stretchg of the walls of the GI tract
Definition
c. enteric nervous system
Term
_____ provid most of the functions of the nervous system
Definition
d. neurons
Term
______ can produce action potentals in response to stimuli
Definition
a. neurons
Term
_____ are the receiving or input portions of a neuron
Definition
d. dendrites
Term
be able to identify a unipolar neuron
Definition
IDENTIFY A BIPOLAR NEURON
Term
identify a multipolar neuron
Definition
see pics
Term
____ assist with the mmigration of neurons during brain development and help from the blood brain barrier
Definition
b. astrocytes
Term
______ form cerebrospinal fluid and help in its circulation
Definition
d. ependymal cells
Term
_____ produce the myelin sheath around several adjacent axons of cns neurons
Definition
e. oligondendrocytes
Term
_____ are flattened cells that encircle pns axons
Definition
a. schwann cells
Term
_______ are small cells that protect cns cells from disease by enfulfing microbes
Definition
c. microglia
Term
the function of themyelin sheath is to
Definition
d. both b and c. (elec insulate the axon and incr the speed of nerv)
Term
the peripheral nucleat cyto plasmic layer of the schwann cell is called the
Definition
neurolemma
Term
____ randomly alternate between open and closed positions
Definition
b. leakage channels
Term
___ open due to changes in membrane potential
Definition
c. voltae-gate channels
Term
___ open and close in response to a specific chem stimulus
Definition
a. ligand-gated channels
Term
which one of the following statements is incorrect
Definition
c. in a cell at rest the conc of k is higher in the ecf
Term
t or f the resting membrane potential is due to a small buidup of positive ions along the inside of the membrane and th a small build up of negative ions along the outside surface of the membrane
Definition
false
Term
the greater the difference in charge across the membrane the larger the membrane potential
Definition
true
Term
the sodium potassum pumps
Definition
d. expel three na for each 2k imported
Term
which one of the following statements is incorrect
Definition
none of the above (occurs when the memb thresh val is eceeded, involves a depol followed by a repol, is rapid chang in membrane)
Term
during the ____ the negative potential decreases towards zero and then eventually becomes positive
Definition
a. dpolarizing phase
Term
during the ___ of ann action potential the membrane potential is restored to the resting state
Definition
b. repolarizing phase
Term
during ____ a second action pottental cannot be initiated even witha very strong stimulus
Definition
d. absolue refractory period
Term
the ____ is the period of time during wich a second action potential can be initiated with a larger than normal stimulus
Definition
e. relative refractory period
Term
_____ are neuropeptides that decrease pain
Definition
d. all of the aabove (enkephalins, endorphins, dyophins)
Term
___ gives water its surface tension
Definition
a. cohesion
Term
steroids are _____
Definition
e. none of the above
Term
____ are the largest of the elements of the cytoskeleton, they are involved in movement
Definition
a. microtubules (not filaments!!!)
Term
which oneof the following statements is incorrect
Definition
e. none (ground substance- supports& bibnnds cells, made of water, proteins and poly saccharides, fills space between cells and fibers contains hyaluronic and chondroitin sulfate)
Term
the ____ consiste of 8-10 rows of many sided keratinocytes with bundles of tonofilaments
Definition
b. s. spinosum ( should look at skin diagram)
Term
which one of the following is not a function of sebum
Definition
e. none (kills bcteria, keeps hair supple, prevents excessive water loss, prevents drying)
Term
______ are responsible for the breakdown of bone matrix
Definition
b. osteoclasts
Term
a suture is functionally clssified as
Definition
a. synarthrosis
Term
the joint between the radius and the scaphoid and lunate bones is an exapmple of a
Definition
e. condyloid joint
Term
the intercarpal and intertarsal joints are exp of
Definition
a. planar joints
Term
which one of the following statements is incorrecct
Definition
e. none. (electrons)
Term
which one of the following states is incorrect
Definition
e. none (blasts secrete matrix, blasts are capable of cell div, blasts are formative cells, blasts mature into cytes)
Supporting users have an ad free experience!