In a whiplash injury, the neck undergoes forced hyperextension then hyperflexion, injuring multiple muscles in the neck. Which of the following muscles would be injured during the hyperextension phase of the injury?
A) Semispinalis capitis
B) Splenius capitis
C) Trapezius
D) Levator scapulae
E) Sternocleidomastoid
E
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The anorectal flexure of the anal canal:
A) occurs at the level of S3. B) is maintained by the transverse rectal folds. C) is where the alimentary tract penetrates the pelvic diaphragm. D) is within the rectovesical pouch. E) is where the omental appendices cease.
Energy required _____________ is not internal work?
a. for active transport b. to pump blood c. to move the body in relation to the environment d. during synthetic reactions e. to maintain body posture
Which of the following is able to passively penetrate the plasma membrane (without a transport protein)?
A. Large polar molecules
B. Small charged particles
C. O2
D. All of the choices are correct.
The series-elastic component of contraction ________.
A. is not provided by tendons B. is unrelated to muscle shortening C. provides for elastic recoil when muscles contract D. absorbs some of the tension of muscle contraction