Ligaments associated with the knee joint include the patellar, anterior cruciate, and posterior cruciate.
Answer the following statement true (T) or false (F)
True
Rationale: See the subsection “Ligaments” in the section “Knee Joint” and Figures 10-28 A and B, 10-29, 10-40, and 10-41.
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The fibers that carry the action potentials that cause skeletal muscle to contract are ________.
A. anulospiral endings B. extrafusal fibers C. alpha motor neurons D. intrafusal fibers E. gamma motor neurons
The gene for normal skin pigment (
A) can also code for the recessive trait of albinism (a). An albino man and a homozygous normal pigmented woman marry and have four children. What is the phenotype of the children? A) 75% normal skin pigment and 25% albino B) 100% normal skin pigment C) 50% normal skin pigment and 50% albino D) 25% normal skin pigment and 75% albino E) 100% albino
All of the following are true about spinal nerves EXCEPT
A) they are all mixed. B) there are 31 pairs C) spinal nerves may contain nerve fibers of both the somatic and autonomic nervous systems. D) all motor nerve fibers in spinal nerves extend uninterrupted from the spinal cord to an effector.
Why is it difficult for "weightless" astronauts in space to know whether they are right side up or upside down?
A) They can't see a horizon. B) The direction in which they are traveling changes rapidly. C) Maculae that report head position depend upon the gravitational pull on the otoliths. D) Sunrise and sunset are no longer linked to a 24-hour day.