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

Anatomy & Physiology

You might also like to view...

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.

Anatomy & Physiology

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

Anatomy & Physiology

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.

Anatomy & Physiology

The pineal gland secretes the hormone

a. melatonin. b. melanin. c. melanocyte stimulating hormone. d. estradiol. e. melanopsin.

Anatomy & Physiology