Answer the following statements true (T) or false (F)
1) A transverse fracture is produced by twisting stresses and spreads along the length of the bone.
2) A comminuted fracture shatters the area into a multitude of bony fragments.
3) The mastoid process is part of the temporal bone.
4) The ethmoid bone contains a superior projection called the crista galli.
5) The sphenoid bone has two condylar processes.
1) FALSE
2) TRUE
3) TRUE
4) TRUE
5) FALSE
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Steroid hormones
A) are proteins. B) cannot diffuse through cell membranes. C) bind to receptors in the nucleus of their target cells. D) act on target cells by activating second messenger cascades. E) are transported in the blood dissolved in the plasma.
Describe anatomical changes in the skull that occurred in human evolution between a Australopithecus afarensis-like ancestor and Homo sapiens
What will be an ideal response?
The human aortic arch has three major branches: the brachiocephalic, the left common carotid, and the left subclavian artery. Which of these three arteries does NOT branch off from the aortic arch in a pig?
A) left common carotid artery B) brachiocephalic artery C) left subclavian artery
In both males and females, gonadotropin secretion by the anterior pituitary is stimulated by:
a. inhibin b. androgens c. GnRH d. FSH e. GHRH