In the figure showing an anterior view of the arteries, what does the number 4 indicate?
A. Superior mesenteric artery
B. Left common carotid artery
C. Celiac trunk
D. External carotid artery
E. Left internal carotid artery
Answer: C
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The vitreous body
A) fills the anterior chamber. B) helps to stabilize the eye and holds the retina up against the eyewall. C) is replaced at the rate of 20 percent per year until middle age. D) circulates through the pupil. E) holds the retina against the lens for proper refraction.
In the vertebrate olfactory system, the olfactory receptor cells have one end in the olfactory epithelium and the other end makes synapses with neurons in the __________ of the brain
Fill in the blank with the correct word.
Are all chemical reactions reversible? If not, why aren't they all reversible?
What will be an ideal response
Oxygen is exchanged between blood and tissues at which of the following areas?
A) Capillaries B) Veins C) Ventricles D) Arteries