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.
B) The parasympathetic nervous system dilates the arteries going into the penis.
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Which structure is an eccrine sweat gland?
a) A b) F c) G d) H e) I
A motor neuron and the muscle fibers that it controls constitute a motor unit
Indicate whether the statement is true or false
The innermost (most anterior) layer of the retina consists of
A. the pigmented epithelium. B. nerve fibers of the ganglion cells. C. bipolar neurons. D. rods and cones. E. amacrine cells.
Which of the following statements regarding the temporomandibular (TMJ) joint is correct?
A. The joint is divided into lateral and medial cavities by an articular disc of cartilage. B. The joint has a cartilage capsule. C. The joint is a combination plane and ellipsoidal joint. D. The joint allows rotation. E. The joint is located between the maxilla and the mandible.