The cavity that contains only the heart is the

A) thoracic cavity.
B) pericardial cavity.
C) mediastinum.
D) pleural cavity.
E) anterior cavity.


Answer: B

Anatomy & Physiology

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The ischemic phase of the uterine cycle is brought on by vascular spasms, which in turn are a response to what?

A. Ovulation B. Menstruation C. Rising LH level D. Falling progesterone level E. Rising progesterone level

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If a cell begins to swell after being placed into a salt solution, the salt solution must have a lower osmotic pressure than the cytosol

Indicate whether the statement is true or false

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A large decrease in pH results in increased H+ binding to an enzyme, which can disrupt electrostatic interactions within the molecule.

Answer the following statement true (T) or false (F)

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The first step in the process of photoreception is

A) the bleaching of rods. B) the bleaching of cones. C) absorption of a photon by a visual pigment. D) inhibition of the sodium pumps. E) release of neurotransmitter.

Anatomy & Physiology