The superior portion of the heart where major blood vessels enter and exit is the

A) apex.
B) hilum.
C) base.
D) septum.
E) mediastinum.


C

Anatomy & Physiology

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Thyroid hormone is somewhat unique in that it is a

A.   biogenic amine that is lipid-soluble. B.   protein hormone  that is water-soluble. C.   steroid hormone that is water-soluble. D.   steroid hormone that is lipid-soluble. E.   monoamine that is water-soluble.

Anatomy & Physiology

Inborn or intrinsic reflexes are ________

A) involuntary, yet may be modified by learned behavior B) always mediated by the brain C) autonomic only D) rapid, predictable, and can be learned responses

Anatomy & Physiology

Specialized macrophages called ________ cells are found in the epidermis and mucous membranes.

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

Anatomy & Physiology

The main function of carbohydrates is to provide

A. hereditary information. B. cellular energy. C. insulation. D. transport molecules.

Anatomy & Physiology