1) ion concentrations are first significantly affected after ________ action potential(s).
a) one
b) a few dozen
c) a few hundred
d) a few thousand
e) a few million
2) the medical term for heart attack is
a) heart failure.
b) myocardial infarction.
c) heart murmur.
d) fibrillation.
e) heart block.
3) atp and dna are examples; they transfer energy and encode genetic information.
a. carbohydrates
b. lipids
c. proteins
d. nucleotides
4) which functions in the control of movement?
a) hippocampus only
b) amygdala only
c) basal nuclei only
d) hippocampus and amygdala
e) all of the above function in the control of movement.
5) match the following structures with the appropriate description.
a. appendix
b. colon
c. duodenum
d. ileum
e. jejunum
section where chyme is processed to remove water and electrolytes, leaving waste
products of digestion
6) which of the following molecules can move across the phospholipid bilayer by
simple diffusion?
a) lipids
b) steroids
c) water
d) lipids and water
e) all of the answers are correct.
7) match these terms with their descriptions.
a. gray matter
b. white matter
c. ascending tracts
d. descending tracts
e. propriospinal tracts
unmyelinated, consists of cell bodies, dendrites, and axon terminals
8) specific responses to changes in body temperature are regulated by the
a) thermoreceptors.
b) hypothalamus.
c) medulla oblongata.
d) skin.
e) cardiac output.
9) which type of tissue below has minimal extracellular matrix?
a) epithelial only
b) connective only
c) neural only
d) muscle only
e) epithelial, neural, and muscle
10) insulin secretion
a) is stimulated by sympathetic neurons.
b) decreases in response to elevated amino acid concentrations.
c) is stimulated by parasympathetic neurons.
d) is inhibited by glp-1.
e) none of these answers are correct.
11) the pituitary hormone that stimulates cell growth and metabolism in many tissues is
a) acth.
b) msh.
c) prolactin.
d) insulin.
e) somatotropin.
12) red blood cell production increases when
a) oxygen levels in the blood increase.
b) oxygen levels in the blood decrease.
c) carbon dioxide levels in the blood increase.
d) carbon dioxide levels in the blood decrease.
e) protein levels in the blood increase.
13) the function of hemoglobin is to
a) carry oxygen.
b) protect the body against infectious agents.
c) aid in the process of blood clotting.
d) carry nutrients from the intestine to the body’s cells.
e) all of the answers are correct.
14) match the change with the cardiovascular event described.
a. increased
b. decreased
c. unchanged
d. stopped
when a blood vessel dilates, resistance through that vessel is ________.
15) an enzyme that joins two substrates using energy is a
a) hydrolase.
b) lipase.
c) transferase.
d) ligase.
e) kinase.
16) the loudness or intensity of a sound wave is related to its
a) amplitude.
b) frequency.
c) duration.
d) pitch.
17) ________ regulates the growth and maturation of megakaryocytes.
a) erythropoietin
b) interleukin
c) thrombopoietin
d) colony-stimulating factor
e) none of the answers are correct.
18) which of the following are not antigen-presenting cells (apcs)?
a) lymphocytes
b) dendritic cells
c) macrophages
d) neutrophils
e) monocytes
19) the posterior pituitary gland is also known as the ________.
20) removal of excess water in urine is known as ________.
21) in vertebrates, the cns is protected by bony cases, the brain inside the ________,
while the spinal cord runs through a canal inside the ________.
22) in the science fiction movie the abyss, a diver is able to breathe while his head is
immersed in a specially prepared liquid pumped into a water-tight helmet attached to a
suit, thus allowing him to dive without an air tank and at greater depths than possible
for scuba divers. is this purely fiction, or is it at least theoretically possible? explain,
considering the nature of alveoli and alveolar gas exchange. assuming it is possible,
describe the composition and nature of the liquid in terms of its oxygen pressure and
concentration.
23) what are functional groups? list the most common functional groups found in
biological molecules.
24) the superior portion of the heart where the major blood vessels enter and exit is the
________.