This bone forms the floor of the anterior cranial fossa. The Crista Galli protrudes from this bone and attaches to one of the membranes of the brain.
A. The temporal bone
B. The parietal bone
C. The occipital bone
D. The sphenoid bone
E. The ethmoid bone
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The work of breathing normally requires about 3% of total energy expenditure; this increases under all of the following situations except when
a. elastic recoil decreases b. resistance increases c. the partial pressure of oxygen increases in the air d. ventilation increases e. compliance decreases
Epithelial cells lining the internal passageways of the genitourinary tract usually have ________ at their free surface
A) mitochondria B) cilia C) microvilli D) junctional complexes E) Golgi complexes
Which describes the response of the voltage-gated channels when an axon is stimulated to threshold?
A. K+ channels open before the Na+ channels. B. Na+ channels are activated and then inactivated. C. K+ channels open at the same time as the Na+ channels. D. K+ channels are opened when Na+ binds to the channel. E. K+ influx causes Na+ channels to inactivate.
Which structure in the diencephalon relays information to the cerebrum?
A. Thalamus B. Hypothalamus C. Pineal body D. Pituitary gland