A unifying feature of vertebrates is that their embryos are segmented. What feature of human anatomy reflects this primitive segmentation?

A. The presence of two forelimbs and two hindlimbs
B. The division of the trunk region into a thorax and an abdomen
C. The arrangement of the teeth in rows
D. The linear arrangement of the ribs and vertebrae
E. The symmetry of the body


D. The linear arrangement of the ribs and vertebrae

Anatomy & Physiology

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Which of the statements below does not describe antigens?

A) Antigens exhibit immunogenicity and reactivity. B) Antigens only come from microbes. C) The parts of antigen molecules that initiate immune responses are called epitopes or antigenic determinants. D) Antigens can include proteins, nucleic acids, lipoproteins, glycoproteins, and certain large polysaccharides.

Anatomy & Physiology

Identify the radial nerve in the following image

A) A B) B C) C D) D E) E

Anatomy & Physiology

The atrioventricular bundle (bundle of His) is represented by ________

Anatomy & Physiology

Perspiration is 50 percent water, 25 percent salt, and 25 percent organic materials.?

Indicate whether the statement is true or false

Anatomy & Physiology