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Bio Exam 4
exam 4 McCracken
58
Biology
Undergraduate 1
12/07/2012

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Term
What part of the brain is associated with human emotion, learning, and memory?
Definition
Limbic System
Term
What are highly branched extensions that receive signals and convey signal to the soma?
Definition
Dendrites
Term
What part of the neuron houses the organelles and nucleus?
Definition
Soma
Term
What myelin containing cells cover the axon?
Definition
Schwann Cells
Term
What is a long extension that transmits signals to other cells?
Definition
Axon
Term
What division of the autonomic nervous system primes body for gaining and conserving energy, resting and digesting?
Definition
Parasympathetic Nervous System
Term
What branch of the nervous system prepares the body for intense energy consuming activities? (fight or flight)
Definition
Sympathetic Nervous System
Term
What type of synapse uses neurotransmitters?
Definition
Chemical Synapse
Term
What are the connective tissue layers surrounding the brain and spinal chord?
Definition
Meninges
Term
What happens when Na and K channels open in the cell membrane of the neuron?
Definition
Action potential is formed
Term
What is defined as heat loss or gain between objects that are in direct contact with each other?
Definition
Conduction
Term
What is defined as heat loss or gain by movement of air across a surface?
Definition
Convection
Term
What is the main way endotherms maintain body temperature?
Definition
By using heat generated through metabolism
Term
What is an example of an insulation adaptation for thermogulation?
Definition
feathers, blubber, fur
Term
What is the main way ectotherms maintain their body temperature?
Definition
Transfer from external sources
Term
What organisms have the same internal solute concentrationas seawater, therefore they dont gain or lose water?
Definition
Osmoconformers
Term
What is the actual filtering structure of the kidney, a tuft of capillaries inside the Bowmans's capsule?
Definition
Glomerulus
Term
What is the main function of the urinary Bladder?
Definition
Store urine
Term
What is urea?
Definition
Breakdown of proteins. Waste product
Term
What are testes?
Definition
Organ that produces sperm
Term
What is the place where sperm are stored while they continue development?
Definition
Epididymis
Term
What gland sits below the bladder and secretes a thin fluid that nourishes sperm? (this gland can become enlarged and block urine flow)
Definition
Prostate
Term
What duct carries sperm from the epididymis up into the abdomen and around the urinary bladder?
Definition
Vas deferens
Term
What gland sits behind the bladder and secretes a thick fructose containing fluid that contributes to semen?
Definition
Seminal vesicle
Term
What is the lining of the uterus?
Definition
Endometrium
Term
What are the female gonads?
Definition
Ovaries
Term
What nourish and protect the oocyte before ovulation?
Definition
Follicles
Term
What endocrine tissue forms in the ovary after ovulation?
Definition
Corpus lutem
Term
Where does fertilization occur?
Definition
Fallopian tubes
Term
What is a rapid succession of cell divisions that produce a ball of cells?
Definition
Cleavage
Term
What stage is characterized by cell movement and results in three germ layers?
Definition
Gastrulation
Term
What is amnion?
Definition
Innermost membrane that encloses the embryo of a mammal, bird, or reptile.
Term
What is the outermost membrane surrounding an embryo of a reptile, bird, or mammal?
Definition
Chorion
Term
Where does implantation occur?
Definition
Uterus or endometrium
Term
What occurs when a repeated stimulus leads to a decreased sensitivity?
Definition
Sensory Adaptation
Term
The eardrum, hammer, anvil and stirrup are part of what ear?
Definition
Middle
Term
What is our true hearing organ?
Definition
Organ of Corti
Term
What potential, similar to an action potential, is generated when a stimulus is received?
Definition
Receptor Potential
Term
What is the white later of connective tissue surrounding the eye?
Definition
Sclera
Term
Focus on the near or far of objects is achieved by changing the shape of what?
Definition
Lens
Term
What photoreceptors are more sensitive to light and allow us to see shades of gray in dim light?
Definition
Rods
Term
What photoreceptors allow us to see color?
Definition
Cones
Term
What is the part of the eye on which the light is focused?
Definition
Retina
Term
What are the 5 tastes?
Definition
sweet, salty, bitter, sour and umami
Term
Whe ends of the olfactory sensory receptors extend into what layer in the nose?
Definition
mucus
Term
Spuertasters sense this taste at about 3x the normal level.
Definition
Bitter
Term
Super tasters are more likely to suffer from what?
Definition
Obesity
Term
The synaptic terminals of the olfactory sensory neurons are located in what structure?
Definition
Olfactory Bulb
Term
What is locomotion?
Definition
active movement from place to place.
Term
The shape of the wing which allows for slower air movement over the top and faster underneath, is called what?
Definition
Airfoil
Term
What is included in the axial skeleton?
Definition
Skull, Vertebrae, Rib cage
Term
What is included in the appendicular skeleton?
Definition
arms, legs, shoulders, pelvic girdles
Term
What type of joint only moves in one plane?
Definition
hinge joint
Term
The thick filaments are made of what protein?
Definition
Myosin
Term
What is actin
Definition
protein to contract muscle
Term
What part of the myosin binds to ATP
Definition
myosin head
Term
What is the contractile unit
Definition
Sarcomere
Term
What is the neurotransmitter secreted by motor neurons?
Definition
Acetylcholine
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