The chemical messengers released into the spatial junctions between neurons are called
a. hormones.
b. motor neurons.
c. neurotransmitters.
d. sensory neurons.
e. synapses.
Ans: c. neurotransmitters.
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Define keratin
What will be an ideal response?
Local control of blood flow
A. occurs because of contraction or relaxation of precapillary sphincters. B. causes precapillary sphincters to contract when carbon dioxide levels decrease in tissue spaces. C. causes an increase in blood flow when oxygen levels increase in tissue spaces. D. Occurs because of contraction or relaxation of precapillary sphincters and causes an increase in blood . flow when oxygen levels increase in tissue spaces are both true statements. E. All of these are true statements.
Because of its weight-bearing capacity, the ________ spine is especially susceptible to injury.
A) cervical B) thoracic C) lumbar D) coccygeal
Adrenaline is also known as epinephrine
Indicate whether the statement is true or false