Death following a head injury is MOST often the result of:
A) an epidural hematoma.
B) trauma to the brain.
C) airway compromise.
D) spinal cord transection.
Answer: B) trauma to the brain.
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Which of the following does not occur at puberty?
A) FSH levels rise. B) GnRH levels decline. C) Levels of sex hormones rise. D) Gametogenesis begins. E) Secondary sexual characteristics begin to develop.
The mouth opens into the
A) laryngeal cavity. B) mouth cavity. C) pharynx. D) nasal cavity. E) buccal cavity.
All of the following are true of the lacrimal glands except that they
A) produce a strongly hypertonic fluid. B) produce most of the volume of tears. C) produce lysozyme. D) produce watery, slightly alkaline secretions. E) are located in recesses in the frontal bones.
Schwann cells differ from oligodendrocytes in which of the following ways?
A. Oligodendrocytes are only found in the PNS; Schwann cells are only found in the CNS. B. Schwann cells form sheaths around several axons, while oligodendrocytes form sheaths around only one axon. C. Schwann cells form myelin; oligodendrocytes do not. D. Schwann cells form a myelin sheath around a portion of only one axon, while oligodendrocytes can surround portions of several axons. E. None of the choices are correct.