An elongated cleft is a(n) ________.

A) foramen
B) fissure
C) meatus
D) canal
E) antrum


fissure

Anatomy & Physiology

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Macrophages termed "dust cells" are particularly prominent in which portion of the respiratory system?

a. Extrapulmonary bronchi b. Lamina propria of the trachea c. Pharyngeal tonsils d. Pulmonary alveoli e. Pulmonary bronchioles

Anatomy & Physiology

An isotonic contraction is described as

A. action potential frequency is high enough that no relaxation of muscle fibers occurs. B. a muscle produces constant tension during contraction. C. a muscle produces an increasing tension during contraction. D. a muscle produces increasing tension as it shortens. E. a muscle produces tension, but the length of the muscle is increasing.

Anatomy & Physiology

Regulation of pH is accomplished by changing blood oxygen levels.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

Demyelination

A) is the addition of myelin to the axon. B) only affects Schwann cells. C) is the gradual reduction in myelin. D) is the thickening of the myelin sheath. E) only affects oligodendrocytes.

Anatomy & Physiology