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1) which has the greater concentration of hydrogen ions, a substance with a ph of 5 or a
substance with a ph of 4?
a) a ph of 4 is greater.
b) a ph of 5 is greater.
c) they are both equal; 4 and 5 are relative values.
d) ph 9, if you mixed the solutions.
e) there is not enough information to determine.
2)
figure 29-1 early human development
identify the structures labeled "4"
a) zygotic twins
b) morula
c) blastomere
d) trophoblast
e) polar bodies
3) the partial pressure of oxygen in atmospheric air at sea level is
a) greater than the partial pressure of oxygen in atmospheric air at the top of mt.
everest.
b) less than the partial pressure of oxygen in atmospheric air at the top of mt. everest.
c) equal to the partial pressure of oxygen in atmospheric air at the top of mt. everest.
4) the head of the radius articulates with the
a) trochlea.
b) capitulum.
c) carpals.
d) olecranon process.
e) styloid process.
5) preganglionic neurons of the autonomic nervous system are located in
a) the brain.
b) the lateral gray horns of the spinal cord.
c) the posterior gray horns of the spinal cord.
d) both the brain and the lateral gray horns of the spinal cord.
e) the cerebrum.
6) the bony portion of the nasal septum is formed by the
a) nasal bones.
b) perpendicular plate of the ethmoid bone.
c) perpendicular plate of the ethmoid and vomer bone.
d) vomer and sphenoid bone.
e) perpendicular plate of the ethmoid and sphenoid bone.
7) the central canal of an osteon contains
a) bone marrow.
b) osteocytes.
c) concentric lamellae.
d) blood vessels.
e) lacunae.
8) sensations of burning or aching pain
a) are carried by type a fibers.
b) reach the cns quickly.
c) cause a generalized activation of the reticular formation and the thalamus.
d) are well localized.
e) are fast adapting.
9) after blood leaves the capillaries, it enters the
a) arteries.
b) arterioles.
c) capillaries.
d) venules.
e) veins.
10) the outward projections from the central gray matter of the spinal cord are called
a) wings.
b) horns.
c) pyramids.
d) fibers.
e) tracts.
11) the amount of potassium excreted by the kidneys is regulated mainly by
a) adh.
b) aldosterone.
c) parathormone.
d) atrial natriuretic peptides.
e) glucocorticoids.
