In the retina, photoreceptor cells do not release neurotransmitter onto ganglion cells
Indicate whether the statement is true or false
T
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To synthesize thyroid hormones, iodine is attached to
A. the amino acid tryptophan. B. acetyl coenzyme A. C. cholesterol. D. the amino acid tyrosine. E. the amino acid phenylalanine.
________ results from the activities of the nervous or endocrine system
A) Self-regulation B) Automatic regulation C) Intrinsic regulation D) Extrinsic regulation E) Autoregulation
A cell or an organ that responds to commands of the control center in negative feedback is termed a(n)
A) receptor. B) thermoregulator. C) hypothalamus. D) effector. E) stimulus.
Bending the trunk forward at the intervertebral discs is an example of what type of angular movement?
a) Flexion b) Extension c) Lateral flexion d) Hyperextension e) None of these choices