Helper T (TH) cells recognize antigens when they are bound to a(n) ________.

A. hapten
B. major histocompatibility complex (MHC) protein
C. basophil
D. natural killer cell
E. immunoglobulin


Answer: B

Anatomy & Physiology

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Kassie is allergic to bee stings. During a play date at the park, she gets stung and goes into anaphylactic shock while she's playing with her friends. Which of the following is a by-product of Kassie's anaphylaxis?

A) understimulation of basophils B) the production of histamines stops C) overstimulation of mast cells D) high blood pressure

Anatomy & Physiology

The sodium-potassium pump moves both potassium and sodium down their concentration gradients, from higher to lower concentration

Indicate whether this statement is true or false.

Anatomy & Physiology

The inner ear consists of three spaces, which are the:

a. perilymph, vestibule, and the cochlea b. endolymph, vestibule, and the cochlea c. vestibule, semicircular canals, and the cochlea d. vestibule, semicircular canals, and the endolymph

Anatomy & Physiology

In contrast to secondary spinal cord injury, primary spinal cord injury occurs:

A) from progressive swelling. B) at the moment of impact. C) from penetrating mechanisms. D) within 24 hours of the injury.

Anatomy & Physiology