At an excitatory synapse, an action potential in the presynaptic neuron increases
a. the membrane potential of the postsynaptic cell membrane
b. the permeability of the postsynaptic cell to Na+
c. the permeability of the postsynaptic cell to Cl-
d. the presynaptic neuron's membrane potential
e. all of the above
B
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Which of the following statements is/are TRUE of the growth of the skeleton?
A) It begins to ossify at six weeks of gestational age. B) All bone formation ceases immediately after the end of adolescence. C) Calcification of bones does not occur until an infant begins to learn to walk. D) All of the answers are correct. E) None of the answers are correct.
Gas exchange is also facilitated by the ________ system, which is responsible for the internal transport of cells and dissolved materials, including nutrients, wastes, and gases.
A) urinary B) digestive C) cardiovascular D) respiratory E) lymphatic
________ is the study of tissue structures
A) Gross anatomy B) Pathology C) Biology D) Microbiology E) Histology
The ________ can be easily palpated between the clavicles
A) costal groove B) body of the sternum C) costal cartilage D) xiphoid process E) suprasternal notch