Nociceptors may be either myelinated or unmyelinated, and function to carry pain sensations to the spinal cord using ________ and ________ as neurotransmitters.
A. acetylcholine; substance P
B. substance P; norepinephrine
C. glutamate; acetylcholine
D. substance P; glutamate
Answer: D
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Which of the following is not true of the pubis?
A. It encircles part of the obturator foramen. B. It forms part of the greater sciatic notch. C. It has a superior ramus. D. It forms part of the acetabulum. E. It forms the anterior inferior part of the pelvis.
Intramembranous ossification
A) produces flat bones, as in the bones of the roof of the skull. B) explains how a juvenile's bone can grow in length. C) occurs in the diaphysis of a long bone. D) occurs inside a bag of cartilage. E) occurs in all bones before birth.
The pineal gland secretes the hormone
a. melatonin. b. melanin. c. melanocyte stimulating hormone. d. estradiol. e. melanopsin.
Because it is an immovable joint, the sagital suture, which joints the two parietal bones of the skull, is classified as a
A: diarthrosis B: synarthrosis C: synovial joint D: ampiarthrosis E: cartilaginous joint