What action(s) do posterior trunk muscles cause when they contract unilaterally?
A. hyperextension
B. extension
C. lateral flexion
D. both extension and hyperextension
E. all of these answers are correct
Answer: C
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Which of the following reasons best explains why it is easier to do a "chin-up" (hands supinated) than a "pull-up" (hands pronated)?
A) Because the brachialis is a less-effective elbow flexor in the pronated position. B) Because the biceps is a less-effective flexor in the pronated position. C) Because the brachioradialis is a less-effective flexor in the pronated position. D) Because the long digital flexors can better assist with elbow flexion in the supinated position. E) Because the humero-radial-ulnar joint is better aligned in the supinated position.
An important way in which effector T cells differ from naive T cells is that _____
a. the cell-surface level of LFA-1 is lower on effector T cells b. L-selectin is upregulated during differentiation of effector T cells c. cellular proliferation occurs after effector T cells leave the secondary lymphoid tissues d. the provision of co-stimulatory signals is not required to induce a response by effector T cells e. effector T cells do not recirculate between lymph, blood, and secondary lymphoid tissues.
The elderly constitute the fastest-growing segment of the population. Discuss the objectives of fitness programs for older adults and provide examples of activities recommended for this population, as well as activities they should avoid.
What will be an ideal response?
In her early twenties, Piper had a healthy sex life, but then she was raped by a trusted friend. Since then, she has experienced anxiety and even fear at the thought of sexual contact
Which of the following types of disorders is Piper MOST likely experiencing? A) an arousal disorder B) a desire disorder C) an orgasmic disorder D) a pain disorder