Paneth cells ________
A) secrete hormones
B) secrete digestive enzymes
C) secrete bicarbonate ions
D) secrete enzymes that kill bacteria
D
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Which type of cell forms cartilage?
A. Osteoclast B. Osteoblast C. Fibroblast D. Osteocyte E. Chondroblast
At an excitatory chemical synapse between two neurons
A. there is increased permeability of the postsynaptic cell to both Na+ and K+. B. an action potential in the presynaptic neuron always causes an action potential in the postsynaptic neuron. C. a small hyperpolarization of the postsynaptic membrane occurs when the synapse is activated. D. excitation occurs because K+ enters the postsynaptic cell. E. action potentials spread through gap junctions between cells.
During which of the following times is the alveolar pressure higher than the atmospheric pressure?
A. at the end of expiration B. at the beginning of expiration C. at the end of inhalation D. at the beginning of inhalation E. Alveolar pressure is never higher than the atmospheric pressure.
The type of movement between carpal bones is described as ________.
A. flexion B. pivot C. gliding D. adduction E. extension