Which best describes an event that occurs as part of the crossed-extensor reflex?
A. It stimulates contraction of the contralateral flexor and inhibits contraction of the contralateral extensor.
B. It stimulates contraction of the contralateral extensor and inhibits contraction of the contralateral flexor.
C. It is initiated by stretch in the ipsilateral extensor muscle.
D. Inhibitory interneurons are activated, which synapse onto contralateral extensor muscles.
E. Monosynaptic excitatory stimulation of ipsilateral extensor muscles occurs.
B
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Skeletal muscle produces body movement as well as maintains our ________ as we sit
A) Posture B) Vasoconstriction C) Strength D) Vasodilation
Medulla means "inner portion."
Answer the following statement true (T) or false (F)
What are the nourishing membranes that lie between the bony covering of the CNS and the nervous tissue?
a. vertebrae b. ganglions c. meninges d. nerve roots e. glial cells
Match the chemical signal with the appropriate description.A. Chemicals produced by neurons that function as hormonesB. Chemicals that act locally on nearby cellsC. Chemical secreted by presynaptic terminalD. Influences same cell type from which it is secretedE. Chemical secreted into blood by specialized cells; travels some distance to target tissuesNeuropeptide
Fill in the blank(s) with the appropriate word(s).