How many days after fertilization do the ears begin to develop?
a) 5
b) 150
c) 10
d) 22
e) 55
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Question 2) During embryonic development, the first portion of the ear to develop is the
a) middle ear.
b) internal ear.
c) external ear.
d) bony labyrinth.
e) membranous labyrinth.
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Question 3) During embryonic development, the lens of the eye develops directly from an invagination of the lens placodes called the
a) optic groove.
b) optic vesicle.
c) optic stalk.
d) prosencephalon.
e) lens vesicle.
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Question 4) When the umbilical cord is tied after birth, the umbilical arteries close by filling in with
a) placental fluid.
b) platelet plugs.
c) connective tissue.
d) smooth muscle.
e) epithelial tissue.
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Question 5) Which of the following vessels carries the venous blood from the lower body into the right atrium?
a) Inferior vena cava
b) Superior vena cava
c) Tibial vein
d) Coronary vein
e) Iliac vein
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Question 6) Which of the following vessels drains blood from the head and neck?
a) Median cubital vein
b) Inferior vena cava
c) Axillary vein
d) Femoral vein
e) Jugular vein
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Question 7) Which blood vessel shown in the figure carries oxygenated blood to the lower thoracic cavity and the abdominal cavity of the body?
a) A
b) B
c) E
d) F
e) H
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Question 8) Where is the arcuate vein?
a) E
b) F
c) G
d) H
e) I
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Question 9) A high count of which of the white blood cells shown in the figure may indicate viral infections?
a) A & B
b) B & C
c) C & D
d) D & E
e) E & C
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Question 10) What layer is composed of areolar connective tissue and epithelium?
a) A
b) B
c) C
d) D
e) none of these
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