1) red bone marrow is the point of origin of all immune cells of the lymphatic system.
2) mesoderm gives rise to muscle, bone, and blood.
3) inhibin modulates the secretion of lh.
4) the nervous system employs exclusively electrical means to send messages, whereas
the endocrine system communicates by means of chemical messengers.
5) odor, sight, and taste stimulate salivatory nuclei in the cerebral cortex.
6) the uterus is a thick muscular chamber inferior to the urinary bladder.
7) papillary muscles prevent the av valves from prolapsing (bulging) excessively into
the atria when the ventricles contract.
8) the three forms of skin cancer are defined by the types of cells from which they
originate.
9) although all cells synthesize phospholipids, there are no genes for phospholipids.
10) trophoblastic nutrition refers to the nutrition of the conceptus before it implants.
11) which of the following is not found in the epidermis?
a. melanocytes
b. fibroblasts
c. stem cells
d. keratinocytes
e. tactile cells
12) the reticular formation is a web of __________ scattered throughout the
__________.
a. nerves; white matter in the cerebrum
b. white matter; cerebellum
c. gray matter; brainstem
d. gray matter; cerebrum
e. neurosomas; hypothalamus
13) the union of theproximal and middle phalanges form __________ joints.
a. pivot
b. plane (gliding)
c. hinge
d. saddle
e. condylar (ellipsoid)
14) what do facilitated diffusion and active transport have in common?
a. both involve transport of a solute up its concentration gradient.
b. both involve transport of a solute down its concentration gradient.
c. both involve the use of energy provided by atp.
d. neither require atp to function.
e. both are examples of carrier-mediated transport.
15) which of the following is not considered anaccessory structure of the eye?
a. conjunctiva
b. palpebra
c. lacrimal apparatus
d. superior oblique
e. cornea
16) which of the following represents the overall reaction for aerobic respiration?
a. c6h12o6 + 6 h2o → 6 co2 + 6 o2
b. c6h12o6 + 6 o2 → 6 co2 + 6 h2o
c. c6h12o6 + 6 co2 → 6 o2 + 6 h2o
d. 6 co2 + 6 h2o → c6h12o6 + 6 o2
e. 6 o2+ 6 h2o → c6h12o6 + 6 co2
17) which of the following would be caused by a contraction of smooth muscle?
a. goose bumps
b. blood leaving the left ventricle of the heart
c. elevating the eyebrows
d. blinking the eyelids
e. deep inspiration
18) the most relevant free energy in human physiology is the energy stored in
__________.
a.electrolytes ionized in water
b.free radicals with an odd number of electrons
c.radioisotopes
d.the chemical bonds of organic molecules
e.van der waals forces
19) assume that the left ventricle of a child’s heart has an edv=90ml, and esv=60ml, and
a cardiac output of 2,400 ml/min. his sv is __________ml/beat and his hr is
__________ bpm.
a. 30; 80
b. 40; 60
c. 80; 30
d. 150; 16
e. 16; 150
20) which of the following statements is true regarding the sodium-glucose transport
protein (sglp)?
a. it is a uniport carrier.
b. it is an antiport carrier.
c. it uses solvent drag to transport glucose and sodium.
d. it transports glucose and sodium from the intestinal lumen into the epithelial cells.
e. it transports glucose from the intestinal lumen into the epithelial cells, and sodium in
the opposite direction.
21) in the premenstrual phase of the menstrual cycle, which arteries rhythmically
constrict and dilate causing endometrial ischemia?
a. uterine
b. arcuate
c. spiral
d. internal iliac
e. ovarian
22) which of the following is not a function of the na+-k+ pump?
a. heat production
b. transport of na+ into the cell and k+ out of the cell
c. secondary active transport
d. regulation of cell volume
e. maintenance of membrane potential
23) which of the following would slow down gas exchange between the blood and
alveolar air?
a. an increase in membrane thickness
b. an increase in alveolar surface area
c. an increase in respiratory rate
d. a decrease in membrane thickness
e. a decrease in nitrogen solubility
24) a renal pyramid voids urine into the __________.
a. minor calyx
b. major calyx
c. renal medulla
d. renal papilla
e. ureter
25) which of the following is not a method by which particles can leave a cell?
a. active transport
b. exocytosis
c. simple diffusion
d. an antiport system
e. pinocytosis
26) drugs called calcium channel blockers may be used to lower blood pressure by
causing arteries to vasodilate. how do you suppose these drugs work?
a. they prevent calcium from entering the sarcoplasmic reticulum of smooth muscle.
b. they stimulate the calcium pump in smooth muscle, thus removing calcium from the
calmodulin.
c. they prevent calcium from exiting the sarcoplasmic reticulum in skeletal muscle.
d. they prevent calcium from entering cardiac muscle, thus slowing down the heart
rate.
e. they prevent calcium from entering smooth muscle, thus allowing the muscle to
relax.
27) most of the stomach is located in the _________of the abdomen.
a. right upper quadrant (ruq)
b. right lower quadrant (rlq)
c. left upper quadrant (luq)
d. left lower quadrant (llq)
e. left middle quadrant (lmq)
28) the __________ synthesizes bile acids by metabolizing __________.
a. duodenum; neutral fats
b. ileum; bilirubin
c. gallbladder; cholesterol
d. pancreas; bile salts
e. liver; cholesterol
29) reflex arcs that only use two neurons are called____________ reflex arcs.
a. ipsilateral
b. contralateral
c. polysynaptic
d. monosynaptic
e. autonomic