What is the proper arrangement of the four structures listed below into the order in which sperm pass from the testis to the urethral meatus?
1. ductus deferens
2. urethra
3. ejaculatory duct
4. epididymis
A) 1, 3, 4, 2
B) 4, 3, 1, 2
C) 4, 1, 2, 3
D) 4, 1, 3, 2
E) 1, 4, 3, 2
Answer: D
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When an enzyme's conformational change results in the enzyme hugging the substrate in its active site, the action is referred to as the __________ model of enzyme function
Fill in the blank with correct word.
The regions of axon membrane that lie between regions of myelin are the
A. ganglia. B. nodes of Ranvier. C. synaptic membranes. D. glial cells. E. pia mater.
The diffusion of water through a semipermeable membrane is called ________.
Fill in the blank(s) with the appropriate word(s).
Tetanic stimulation combined with glutamate-NMDA receptors binding results in
A) synaptic plasticity. B) facilitation. C) long-term potentiation. D) pre-synaptic inhibition.