How do the extrinsic eye muscles differ in action from the intrinsic eye muscles
ID: 95954 • Letter: H
Question
How do the extrinsic eye muscles differ in action from the intrinsic eye muscles? A) The two muscle groups do not differ in movement types, only in when the movements occur. B) The extrinsic muscles cause faster movements than do the intrinsic muscles. C) Extrinsic eye muscles move the eyeball in relation to the rest of the body, whereas intrinsic muscles move structures within the eyeball. D) The extrinsic eye muscles are smooth muscles inside the eyeball while the intrinsic eye muscles originate on the surface of the orbit and insert into the sclera of the eye just posterior to the cornea. E) None of the answers are correct. Which of the following features are common to the muscles of mastication? A) They share an oculomotor nerve innervation. B) They move the mandible at the temporomandibular joint. C) They are primarily grouped among the muscles of facial expression. D) They allow a person to smile. E) They control swallowing. Which of the following extends the vertebral column and depresses the ribs? A) longus capitis B) iliocostalis lumborum C) longus cervicis D) quadratus lumborum E) longus colli Nodding of the head as a person falls asleep sitting up involves primarily the muscles of (the) _____. A) lumborum region only B) cervicis and thoracis regions C) capitis and cervicis regions D) cervicis region only E) None of the answers are correct. Which of the following is the function of the superficial layer of the intrinsic back muscles? A) flexion of the vertebral column B) extension or lateral flexion of the neck C) interconnect and stabilize the vertebrae D) extension of the vertebral column E) depress the ribs The superficial erector spinae muscle group that is located most medial to the vertebral column is the _____. A) longissimus group B) spinalis group C) iliocostalis group D) capitis group E) thoracis group Which of the following can flex the neck? A) iliocostalis lumborum B) iliocostalis cervicis C) longissimus thoracis D) longus colli E) multifidus The muscular partition that separates the abdominopelvic and thoracic cavities is the ______. A) masseter B) transversus abdominis C) diaphragm D) perineum E) rectus abdominisExplanation / Answer
16) Extrinsic eye muscles move the eyeball in relation to the rest of the body, whereas intrinsic muscles move structures within the eyeball.
Therefore, option (C) is correct.
17) The muscle of mastication move the mandible at the temporo-mandibular joint. Its function is in the elevation of mandible and closes the jaw. Thus, involved in the moving the mandible side to side.
Therefore, option (B) is correct.
18) Iliocostalis lumborum extends the vertebral column and depress the ribs.
Therefore, option (B) is correct.
19) Nodding of the head as a person falls asleep sitting up involves primarily the muscle of the capitis and cervicis regions.
Therefore, option (C) is correct.
20) The function of the superficial layer of intrisinc back muscle is to extension or lateral flexion of neck.
Therefore, option (B) is correct.
21) The superficial erector spinae group that is located most medical to hte vertebral column is the spinalis group .
Therefore, option (B) is correct.
22) Longus coli can flex the neck and head.
Therefore, option (D) is correct.
23) The muscular partition that seperates the abdominopelvic and thoracic cavities is the diaphragm.
Therefore, option (C) is correct.
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