Which structures in capillary beds open to allow the capillaries to perfuse with blood?

A. Metarterioles
B. Thoroughfare channels
C. Fenestrations
D. Precapillary sphincters
E. Postcapillary sphincters


D. Precapillary sphincters

Anatomy & Physiology

You might also like to view...

Explain how the Broca's area and Wernicke's area contribute to language

What will be an ideal response?

Anatomy & Physiology

Where is the origin of the frontalis muscle?

A) frontal bone B) epicranial aponeurosis C) occipital bone D) mandible

Anatomy & Physiology

A sperm count any lower than ________ million sperm per mL of semen is usually associated with infertility (sterility).

A. 200 to 250 B. 100 to 200 C. 250 to 500 D. 50 to 100 E. 20 to 25

Anatomy & Physiology

Fibrin, which is produced from the plasma protein ________, helps form blood clots.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology