Which of the following chemicals does not have a positive chronotropic effect?

A. Caffeine
B. Thyroid hormone
C. Epinephrine
D. Potassium


Answer: D

Anatomy & Physiology

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Which of the following occurs during an erection?

A) The veins of the corpora cavernosa dilate. B) The parasympathetic nervous system dilates the arteries going into the penis. C) Blood fills the corpora spongiosum, causing it to engorge. D) The sympathetic nervous system constricts the veins leaving the penis.

Anatomy & Physiology

Steroid hormones diffuse through cell membranes, then bind with receptors, whereas

nonsteroid hormones bind receptors on the target cell membrane. Indicate whether the statement is true or false

Anatomy & Physiology

LH stimulates which cells to synthesize androgens?

a. sperm b. spermatogonia c. theca d. granulosa e. Sertoli

Anatomy & Physiology

What spinal nerve tract carries information regarding pain and temperature?

A) Corticospinal B) Spinocerebellar C) Reticulospinal D) Lateral spinothalamic

Anatomy & Physiology