A tissue is:
a membrane that lines body cavities.
a group of similar cells that perform a common function.
a thin sheet of cells embedded in a matrix.
the most complex organizational unit of the body.
The Correct Answer is B
A. a membrane that lines body cavities: While membranes are made of tissues, this describes a specific structure (like a serous membrane), not the definition of tissue itself.
B. a group of similar cells that perform a common function: This is the standard biological definition of a tissue, which sits between the cellular and organ levels of organization.
C. a thin sheet of cells embedded in a matrix: This describes specific types of connective or epithelial tissues, but is too narrow to define all tissues.
D. the most complex organizational unit of the body: This is incorrect; the "organism" is the most complex unit, followed by organ systems and then organs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. dialysis: This is the diffusion of solutes (not water) across a selectively permeable membrane.
B. pumps: Pumps refer to active transport, which moves substances against a concentration gradient using energy.
C. facilitated diffusion: This is the movement of solutes through a membrane carrier or channel.
D. osmosis: This is specifically the passive movement of water from an area of low solute concentration to an area of high solute concentration.
Correct Answer is A
Explanation
A. Vagus: While the Vagus nerve (CN X) has many sensory functions, it is primarily involved in visceral sensation and parasympathetic control, rather than proprioception (sense of body position) for skeletal muscles.
B. Hypoglossal: CN XII carries proprioceptive fibers from the tongue muscles.
C. Accessory: CN XI carries proprioceptive fibers from the sternocleidomastoid and trapezius muscles.
D. Abducens: CN VI (and other nerves moving the eye) carries proprioceptive feedback regarding the position of the eyeball.
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