BIOL 447 Homework

subject Type Homework Help
subject Pages 6
subject Words 844
subject Authors Edwin F. Bartholomew, Frederic H. Martini, Judi L. Nath

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1) bone is composed of ________ percent cells.
a) 25
b) 10
c) 2
d) 15
e) 50
2) in general, autonomic tone of peripheral blood vessels increases when
a) sympathetic stimulation is increased.
b) sympathetic stimulation is decreased.
c) parasympathetic stimulation is increased.
d) parasympathetic stimulation is decreased.
e) somatomotor stimulation is increased.
3) the brain requires a substantial blood supply. the vessels that deliver blood to the
brain are the
a) external carotid arteries.
b) facial arteries.
c) jugular veins.
d) internal carotid and vertebral arteries.
e) dural sinuses.
4) ipsps (inhibitory postsynaptic potentials)
a) are local depolarizations.
b) are local hyperpolarizations.
c) increase membrane permeability to sodium ions.
d) block the efflux of potassium ions.
e) block the efflux of calcium ions.
5) in what vessel is blood pressure the highest?
a) artery
b) arteriole
c) capillary
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d) venule
e) vein
6) muscles located close to the midline of the body may be called
a) rectus.
b) distalis.
c) proximal.
d) medialis.
e) lateralis.
7) the cell that dominates the deep cortical region of a lymph node is the ________ cell.
a) b
b) t
c) plasma
d) nodule
e) nk
8) the superior border of the ilium that acts as a point of attachment for both ligaments
and muscles is the
a) anterior iliac spine.
b) acetabulum.
c) posterior superior iliac spine.
d) iliac crest.
e) iliac notch.
9) the repeating unit of a skeletal muscle fiber is the
a) sarcolemma.
b) sarcomere.
c) sarcoplasmic reticulum.
d) myofibril.
e) myofilament.
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10) mechanoreceptors might detect which of the following sensations?
a) pressure
b) touch
c) vibration
d) muscle length
e) all of the answers are correct.
11) as blood travels from arteries to veins,
a) pressure builds.
b) pressure drops.
c) flow becomes turbulent.
d) viscosity increases.
e) diameter of the blood vessels gets progressively smaller.
12) a patient has an infected puncture wound to her foot. which type of white blood cell
would you expect to be elevated in a differential white cell count?
a) neutrophils
b) eosinophils
c) basophils
d) lymphocytes
e) monocytes
13) by weight, which element is the second most abundant in the human body?
a) oxygen
b) carbon
c) hydrogen
d) nitrogen
e) calcium
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14)
figure 17-1 the sectional anatomy of the eye
identify the structure labeled "12"
a) pupil
b) optic disc
c) sclera
d) fovea
e) retina
15) joe is 40 years old and 30 pounds overweight. like many middle-aged men, joe
carries most of this extra weight in his abdomen and jokes with his friends about his
"beer gut." during an annual physical, joe's physician advises him that his spine is
developing an abnormal curvature. why is the curvature of joe's spine changing, and
what is this condition called?
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16) differentiate between transcription and translation.
17) ________ are fixed macrophages found in the liver. (note: be sure to capitalize the
first letter of your answer).
18) two hormones that have opposing effects are called ________.
19) small, fluid-filled pockets in connective tissue are called ________.
20) the proper distribution of a cell's genetic material to two daughter cells is
accomplished by the process of ________.
21) list and briefly characterize the three trimesters of gestation.

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