Shock due to a problem with the pumping action of the heart (e.g., myocardial infarction, arrhythmias, ischemia) is:
A) obstructive shock
B) vascular shock
C) hypovolemic shock
D) cardiogenic shock
Answer: D) cardiogenic shock
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The muscle found in the walls of most hollow organs of the body is
A) smooth muscle. B) involuntary striated muscle. C) skeletal muscle. D) cardiac muscle. E) voluntary striated muscle.
Which choice best distinguishes between mitosis and meiosis?
A. Mitosis produces sex cells that are genetically identical to the parent cell, whereas meiosis produces somatic cells that are genetically different from the parent cell. B. Mitosis produces sex cells that are genetically different from the parent cell, whereas meiosis produces somatic cells that are genetically identical to the parent cell. C. Mitosis produces somatic cells that are genetically identical to the parent cell, whereas meiosis produces sex cells that are genetically different from the parent cell. D. Mitosis produces somatic cells that are genetically different from the parent cell, whereas meiosis produces sex cells that are genetically identical to the parent cell.
The M line is formed by a flattened disc-like cytoskeletal protein that connects the thin filaments of two adjoining sarcomeres
Indicate whether the statement is true or false
Which of the following statements concerning vision is false?
A) Approximately half of the fibers in each optic nerve cross to opposite sides of the brain at the optic chiasm. B) Fibers of the optic nerve synapse at the lateral geniculates of the thalamus. C) The image that is formed on the retina is inverted. D) The entire retina receives equal representation in the visual cortex. E) The visual cortex of the brain receives the entire field of vision.