As a person ages, the skin typically becomes

A. spotted with patches of pigment.
B. more opaque.
C. more elastic.
D. thicker.


Answer: A

Anatomy & Physiology

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The process of up-regulation makes target cells more sensitive to a hormone.

a. true b. false

Anatomy & Physiology

A common procedure that is used for the purpose of identification is

a. tail docking c. snaring b. ear notching d. castration

Anatomy & Physiology

Action potentials in neurons in the inspiratory center of the medulla oblongata result in action potentials in the ________ nerves to the diaphragm, which in turn cause ________ of the muscle, resulting in a/an ________ in the volume of the thoracic cage

A. motor; contraction; decrease B. parasympathetic; contraction; decrease C. sympathetic; contraction; increase D. motor; contraction; increase E. sympathetic; relaxation; increase

Anatomy & Physiology

Robert Hooke was an English scientist who first described ____ by looking at a thin slice of cork under his primitive microscope

a. organelles b. cells c. plastids d. proteins

Anatomy & Physiology