Identify the mechanisms by which neuromodulators alter synaptic transmission. (Check all that apply.)
A. Changing neurotransmitter receptor numbers
B. Affecting breakdown of neurotransmitters
C. Affecting the removal of neurotransmitters
D. Increasing amounts of neurotransmitter released
Answer: C
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An organelle that synthesizes steroid hormones and is abundant in the ovaries and testes is the __________ endoplasmic reticulum.
Fill in the blank(s) with the appropriate word(s).
The type of membrane that prevents desiccation, provides lubrication, and traps bacteria and foreign particles is
A. serous. B. mucous. C. synovial. D. cartilaginous. E. cutaneous.
________ are secreted by cells infected with viruses, alerting neighboring cells and protecting them from becoming infected.
A. Interferons B. Granzymes C. Complement system globulins D. Pyrogens E. Perforins
As a lever produces more force, it also produces a greater speed and distance.
Answer the following statement true (T) or false (F)