A swishy murmur heard between the second and first heart sounds is indicative of a(n) ____________________ (stenotic or insufficient) ____________________ (AV or semilunar) valve
Fill in the blank(s) with correct word
insufficient, AV
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Which of the labeled layers in the diagram of the arterial wall consists mainly of elastic fibers and smooth muscle fibers?
a) A b) B c) C d) A and B e) A, B and C
When a small, polar solute binds to a membrane protein that then changes shape and transports the solute across the membrane, the process is known as
A. simple diffusion. B. channel-mediated diffusion. C. carrier-mediated diffusion. D. active transport. E. endocytosis.
Intact skin provides protection because
A. macrophages roam in the epidermis. B. it forms a physical barrier against the entry of microbes. C. the skin enhances water loss from the body. D. the skin contains components of the excretory system. E. its secretions keep the skin slightly alkaline.
Identify somatic effectors and visceral effectors
A) Somatic effectors are skeletal muscle, cardiac muscle, and smooth muscle. Visceral effectors are glands and adipose tissue. B) Somatic effectors are glands and adipose tissue. Visceral effectors are skeletal muscle, cardiac muscle, and smooth muscle. C) Somatic effectors are smooth muscle, cardiac muscle, glands, and adipose tissue. Visceral effectors are skeletal muscle. D) Somatic effectors are skeletal muscle. Visceral effectors are smooth muscle, cardiac muscle, glands, and adipose tissue. E) Somatic effectors are skeletal muscle, smooth muscle, cardiac muscle, and glands. Visceral effectors are adipose tissue.