The cardiovascular centers of the medulla oblongata may be subdivided into ________.

A) apneustic and pneumotaxic
B) apneustic and cardiac
C) cardiac and vasomotor
D) cardiac and pneumotaxic
E) apneustic and vasomotor


Ans: C) cardiac and vasomotor

Anatomy & Physiology

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An action potential on a neuron develops when

a. threshold voltage is reached on an axon b. voltage-gated Na+ channels open c. spatial or temporal summation of graded potentials occurs to a great enough degree d. the axon hillock reaches threshold voltage e. any of the above events occur

Anatomy & Physiology

Which of the following organs is not part of the lower respiratory system?

A) pharynx B) trachea C) larynx D) bronchi E) alveoli

Anatomy & Physiology

Immunocytochemical staining for a protein called glial fibrillary acidic protein (GFAP) specifi-cally identifies which cell type in the nervous system?

a. Astrocyte b. Ganglion cell c. Microglial cell d. Motor neuron e. Oligodendrocyte

Anatomy & Physiology

Carbon dioxide is transported by all the following means except ________.

A. dissolved gas B. bicarbonate ions C. carbonate D. carbonic acid E. carbaminohemoglobin

Anatomy & Physiology