Which is the only type of muscle tissue that is voluntary?
Connective
Cardiac
Skeletal
Smooth
The Correct Answer is C
A. Connective: Connective tissue provides support and structure (e.g., tendons, cartilage) but is not muscle tissue.
B. Cardiac: Cardiac muscle, found in the heart, is involuntary and contracts rhythmically without conscious control.
C. Skeletal: Skeletal muscle is the only voluntary muscle tissue, meaning it is consciously controlled. It allows movement of the body by attaching to bones via tendons.
D. Smooth: Smooth muscle, found in internal organs (e.g., intestines, blood vessels), is involuntary and controlled by the autonomic nervous system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Building blocks of lipids: Amino acids are the building blocks of proteins, not lipids. Lipids are composed of fatty acids and glycerol.
B. Classified as monosaccharide, disaccharides, and polysaccharides: These classifications refer to carbohydrates, not amino acids.
C. Classified as essential and nonessential: Amino acids are classified as essential (must be obtained from diet) and nonessential (can be synthesized by the body).
D. Building blocks of carbohydrates: The building blocks of carbohydrates are simple sugars (monosaccharides), not amino acids.
Correct Answer is B
Explanation
A. Appear yellow: Yellow skin is often due to jaundice (bilirubin accumulation) or carotene deposits, not keratinization.
B. Are hardened and water-resistant: Keratinization involves the production of keratin, making the epidermis tough and water-resistant to protect against dehydration and external damage.
C. Appear cyanotic: Cyanosis is a bluish discoloration due to hypoxia, not keratinization.
D. Have been replaced by connective tissue: Keratinized epidermal cells are still part of the skin, whereas connective tissue replacement occurs in scarring or wound healing.
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