Nokea
Which term explains the processes and functions of many structures of the body and how they interact with one another?
- A. Anatomy
- B. Mitosis
- C. Filtration
- D. Physiology
Correct Answer: D
Rationale: Physiology explains the processes and functions of the various structures and how they interrelate with one another.
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Which traits describe visceral muscles?
- A. Smooth and voluntary
- B. Smooth and involuntary
- C. Striated and voluntary
- D. Striated and involuntary
Correct Answer: B
Rationale: Visceral (smooth) muscles will not function at will; thus, they act involuntarily.
Which is the function of epithelial membranes?
- A. Secretes mucus, lines ends of bones, and lines bursae.
- B. Lines ends of bones, secretes synovial fluid, and lines internal surfaces of organs.
- C. Covers the wall of lower digestive tract, secretes mucus, and lines lungs, peritoneum, and pericardium.
- D. Lines lungs, peritoneum, and pericardium, and secretes synovial fluid.
Correct Answer: C
Rationale: The epithelial membrane secretes mucus, lines the lungs, peritoneum, and pericardium, and covers the wall of the lower digestive tract. The synovial membrane secretes synovial fluid to prevent friction between joints and the ends of bones, and lines the bursae found between moving body parts.
Which are the smallest living components in our body?
- A. Cells
- B. Organs
- C. Electrons
- D. Osmosis
Correct Answer: A
Rationale: Cells are considered to be the smallest living units of structure and function in our body.
Which is the type of tissue composed of cells that contract in response to a message from the brain or spinal cord?
- A. Epithelial
- B. Connective
- C. Membrane
- D. Muscle
Correct Answer: D
Rationale: Muscle tissue is composed of cells that contract in response to a message from the brain or spinal cord.
Which structure forms the outer boundary of the cell?
- A. The nucleus
- B. The cytoplasm
- C. The plasma membrane
- D. The endoplasmic reticulum
Correct Answer: C
Rationale: The plasma membrane encloses the cytoplasm and forms the outer boundary of the cell. The nucleus, cytoplasm and endoplasmic reticulum are internal structures in the cell.