The gelatinous material that gives the eyeball its basic shape is the
A) vitreous humor.
B) aqueous humor.
C) ora serrata.
D) perilymph.
E) posterior cavity.
A
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Cardiovascular centers located in the ________ adjust the heart rate, the strength of cardiac contractions, and the flow of blood through the peripheral tissues
A) pons B) medulla oblongata C) prefrontal cortex D) thalamus E) midbrain
The process of bones increasing in width is known as ________.
A) closing of the epiphyseal plate B) long bones reaching adult length and width C) appositional growth D) concentric growth
Hypothalamic releasing and release-inhibiting hormones are transported from the hypothalamus to the anterior pituitary by way of __________.
A) the general bloodstream B) a portal system of blood vessels directly connecting the two organs C) direct contact between the two organs D) a cascade of release-inhibit-release-etc. interactions
What does the thick filament do during a muscle contraction?
A) Pulls on the thin filament B) Blocks the actin active site C) Stabilizes the Z-disc D) Forms a stationary wall for the thin filament to pull against