An erection of the penis is caused by

A. muscle flexion of the penile muscles.
B. blood filling the erectile bodies and compressing the veins.
C. ejaculatory muscles.
D. semen pressure from the testes and ductus deferens.
E. increased secretions of lymph into the spongy tissue.


Answer: B

Anatomy & Physiology

You might also like to view...

Which of the following line the ventricles of the brain?

A. Schwann cells B. Satellite cells C. Astrocytes D. Oligodendrocytes E. Ependymal cells

Anatomy & Physiology

The cellular events of muscle contraction require a large amount of energy. Which of the following organelles might be abundant in the cells that coordinate these events?

A) mitochondria B) Golgi apparatus C) rough endoplasmic reticulum D) nucleus

Anatomy & Physiology

Which cartilage attaches the ribs to the sternum?

A) Hyaline B) Elastic C) Fibrocartilage D) Areolar cartilage

Anatomy & Physiology

What type of joint occurs between the superior and inferior articulating facets of adjacent vertebrae?

A. cartilaginous B. non-axial gliding C. hinge D. condyloid

Anatomy & Physiology