Air is forced out of the lungs during normal expiration due to _________.
A. contraction of the diaphragm
B. elastic recoil of tissues
C. contraction of bronchioles
D. contraction of the external intercostal muscles
Answer: B. elastic recoil of tissues
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A) sperm. B) seminal fluid. C) prostaglandins. D) spermatogonia. E) fibrinogen.
Which hormone is produced in bone and regulates bone formation, but also protects against diabetes mellitus?
growth hormone osteocalcin calcitonin leptin
If a post synaptic cell is stimulated to threshold by temporal summation this implies that ________
A) the postsynaptic cell can be influenced by only one presynaptic cell B) the postsynaptic cell is sending frequent action potential C) a presynaptic neuron is sending frequent EPSP D) the presynaptic neuron is sending frequent IPSP
The parasympathetic nervous system has little effect on ____ activity
a. atrial b. AV node c. heart rate d. SA node e. ventricular