1) usually, cytokine binding activates
a) jak kinase.
b) tyrosine kinase.
c) intrinsic transducers.
d) calmodulin kinase.
e) citrulline kinase.
2) the falling phase of the action potential is due primarily to
a) na+ flow in the cell only.
b) na+ flow out of the cell only.
c) k+ flow out of the cell only.
d) k+ flow into the cell only.
e) na+ flow out of the cell and k+ flow into the cell.
3) a decrease in the release of neurotransmitter from the photoreceptor would indicate
a(n)
a) decrease in light intensity.
b) lack of light reaching the retina.
c) increase in light intensity.
d) change in focus of the lens onto a distant object.
4) match the type of reflex to its description.
a. somatic
b. autonomic
c. spinal
d. cranial
e. innate
f. acquired
g. polysynaptic
integrated in the spinal cord, often modulated by the brain
5) match the lung capacity with its description.
a. total lung capacity
b. inspiratory capacity
c. vital capacity
d. functional residual capacity
the amount of air remaining in the lungs after a normal breath
6) when alveolar pressure is equal to atmospheric pressure, air flows into the lungs.
a) true
b) false
7) match the cells/tissue with the hormone it secretes.
a. leydig cells
b. granulosa cells
c. corpus luteum
d. placenta
estrogen in nonpregnant woman
8) match these terms with their descriptions.
a. gray matter
b. white matter
c. ascending tracts
d. descending tracts
e. propriospinal tracts
projections of white matter that remain in the spinal cord
9) x-linked genes are expressed
a) more often in males.
b) more often in females.
c) at equal rates in the two genders.
10) match the change with the cardiovascular event described.
a. increased
b. decreased
c. unchanged
d. stopped
if total cross-sectional area of blood vessels in an organ increases, what happens to
velocity of blood through that organ?
11) caffeine, nicotine, and alcohol all have effects on
a) action potential conduction.
b) long-term potentiation.
c) synaptic activity.
d) neurotransmitter degradation.
e) neurotransmitter reuptake.
12) short reflexes of the digestive system are integrated in the ________.
13) groups of adjacent fibers bundled together into units are called ________. these
bundles are surrounded by the proteins ________ and elastin as well as ________ that
deliver nutrients to the muscle cells.
14) for ________ to occur, a second potential must arrive before a previous one has
been completed.
15) explain how the body can be in a state of osmotic equilibrium and chemical
disequilibrium.
16) contraceptive pills containing estradiol or estradiol plus progesterone are given at
programmed doses during the ovarian cycle to prevent follicle maturation and
ovulation. explain how these pills work.
17) explain what is meant by the terms respiratory pump and skeletal muscle pump.
why are these important to the cardiovascular system?