1) which of the following forces does not help lymph to flow?
a. rhythmic contractions of lymphatic vessels
b. the thoracic pump
c. the skeletal muscle pump
d. the lymphatic node pump
e. arterial pulsations squeezing lymphatic vessels
2) during birth, an infant is normally stimulated to breathe by __________.
a. co2 accumulating in the baby’s blood
b. an increased o2 level in the baby’s new environment
c. prostaglandins
d. surfactant
e. being spanked by the doctor
3) which of the following structures belong to the inner ear?
a. tympanic membrane
b. helix
c. incus
d. semicircular duct
e. tensor tympani muscle
4) when ____________ become enclosed in lacunae, they become cells called
_____________.
a. osteogenic cells; osteoblasts
b. osteoblasts; osteoclasts
c. osteoblasts; osteocytes
d. osteocytes; osteoclasts
e. osteocytes; osteoblasts
5) in the fast block to polyspermy, binding of sperm opens up __________ channels,
which depolarizes the egg membrane and __________.
a. na+; prevents the entrance of any more sperm
b. na+; prevents the entrance of more na+
c. na+; prevents the entrance of ca2+
d. ca2+; prevents the entrance of any more sperm
e. ca2+; prevents the entrance of more na+
6) the minimum stimulus needed to cause muscle contraction is called the __________.
a. threshold
b. latent period
c. twitch
d. motor unit
e. innervation
7) which of the following is not a function of blood?
a. transports a variety of nutrients
b. helps to stabilize the ph of extracellular fluids
c. participates in the initiation of blood clotting
d. produces plasma hormones
e. helps to regulate body temperature
8) in response to a drop in overall blood pressure, __________ stimulates constriction
of the glomerular inlet and even greater constriction of the outlet.
a. azotemia
b. sodium chloride
c. parathyroid hormone
d. aldosterone
e. angiotensin ii
9) between weeks 3 and 8 of development, a developing individual is considered a
__________.
a.trophoblast
b.zygote
c.blastocyst
d.embryo
e.fetus
10) michael jordan was arguably the best player in professional basketball history.
scientifically, one would expect him to have highly developed __________ fibers.
a. red
b. white
c. intermediate
d. fast twitch
e. slow oxidative
11) what does the medullary ischemic reflex result in?
a. increased circulation to the brain
b. reduced circulation to the brain
c. ischemia of the medulla oblongata
d. increased circulation to the adrenal medulla
e. hormone secretion by the adrenal medulla when perfusion drops
12) which neurotransmitter excites skeletal muscle and inhibits cardiac muscle?
a. norepinephrine
b. dopamine
c. histamine
d. acetylcholine
e. -endorphin
13) which of the following is not a function of the liver?
a. glycogenesis
b. detoxification
c. phagocytosis
d. secretion of digestive enzymes
e. synthesis of plasma proteins
14) alternative routes of blood supply are called __________.
a. metarterioles
b. capillary beds
c. preferred channels
d. thoroughfare channels
e. anastomoses
15) the cortex of the long bone’s diaphysis is made of _________.
a. marrow
b. compact bone
c. spongy bone
d. dense regular connective tissue
e. articular cartilage
16) circulating hormones are mostly taken up and degraded by the _________ and the
__________.
a. adrenal glands; intestines
b. liver; kidneys
c. blood; kidneys
d. liver; spleen
e. spleen; kidneys
17) which of the following is not a function of the skeleton?
a. storage ofcalcium and phosphate ions
b. storage ofred blood cells
c. providing support for most muscles
d. protecting the brain
e. protecting the spinal cord
18) a __________ is an elevated patch of melanized skin.
a. hemangioma
b. mole
c. freckle
d. flexion line
e. friction ridge
19) in the air we breathe, which gas is found in the highest concentration?
a. oxygen
b. water vapor
c. nitrogen
d. carbon dioxide
e. hydrogen
20) by the end of 8 weeks, the individual is considered a fetus because __________.
a. all the primary germ layers are formed
b. the amniotic cavity has formed
c. all of the organ systems are present
d. the neural tube and yolk sac have formed
e. the mesoderm has formed