At the neuromuscular junction, the electrical signal of the nerve ________
A) is sent directly to muscle
B) causes the axon terminal to release acetylcholine (ACh)
C) stimulates formation of the neurotransmitter acetylcholine (ACh)
D) causes the axon terminal to release Na+ and K+
Answer: B
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Which of the following are examples of articular fibrocartilage?
A. the intervertebral discs B. the menisci of the knee C. both A and B D. none of the above
How are thoracic vertebrae 11 and 12 different from the other vertebrae?
A) The orientation of the articular processes is different from all the other thoracic vertebrae. B) The transverse processes do not have facets that articulate with the tubercles of the ribs. C) There are two foramina on vertebrae 11 and 12. D) The spinous processes are directed parallel with the centrum.
Joey is 6 months old and requires a blood transfusion; his blood type is B. What type of blood may he receive? Is his age a factor in your answer? What would happen if he received a "wrong" blood type? If Joey were younger, is it possible that there is no "wrong" blood type? Why may it surprise a beginning physiology student, familiar with the basics of immunology, that a person could mount an
immediate immune response to transfused blood? Explain all of your answers. What will be an ideal response?
In the blastocyst, the
a. trophoblast is destined to become the fetus. b. trophoblast is destined to become the fetal portion of the placenta. c. trophoblast is destined to become the inner cell mass. d. blastocoele serves the functions of the digestive system, lungs, and kidneys for the fetus. e. blastocoele is destined to become the fetus.