P-DAT 2 Suboccipital Region
(131).jpg "P-DAT 2 Suboccipital Region - Quiz")
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- 1.
Identify the tagged structure
- A.
Pars interarticularis of C2
- B.
Body of C1
- C.
Posterior tubercle of C1
- D.
Dens of C2
- E.
Dens of C1
Correct Answer
D. Dens of C2Explanation
The correct answer is "Dens of C2." The other options are incorrect because they refer to different anatomical structures. The dens of C2, also known as the odontoid process, is a bony projection that extends from the body of the C2 vertebra. It serves as a pivot point for the rotation of the head.Rate this question:
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- 2.
You are treating a patient who you suspect is suffering from a pinched nerve. You believe the lesion to be affecting the nerve that supplies the tagged muscle. Where does this nerve exit vertebral canal?
- A.
Superior to the vertebral artery
- B.
Inferior to the posterior arch of C2
- C.
Between the vertebral artery and posterior arch of C1
- D.
Within the foramen transversarium
- E.
Inferior to the posterior arch of C1
Correct Answer
C. Between the vertebral artery and posterior arch of C1Explanation
The nerve that supplies the tagged muscle exits the vertebral canal between the vertebral artery and the posterior arch of C1. This suggests that the pinched nerve is likely located in this region, causing the symptoms observed in the patient.Rate this question:
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- 3.
Which of the following statements is true about the structure that passes over the tagged area (in yellow)?
- A.
It gives off the transverse cervical artery branch
- B.
It terminates in the suboccipital triangle
- C.
Passes through the foramen transversarium of C1 to C7
- D.
It is most likely to be damaged with the fracture of C7 than C1 transverse process
- E.
It is a branch of the subclavian artery
Correct Answer
E. It is a branch of the subclavian arteryExplanation
The structure that passes over the tagged area is most likely to be a branch of the subclavian artery. This is because the subclavian artery is a major blood vessel that supplies blood to the upper limb and part of the head and neck. The other statements do not provide any information about the structure passing over the tagged area.Rate this question:
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- 4.
What is the distal attachment of the tagged muscle?
- A.
Posterior tubercle of C1
- B.
Transverse process of C1
- C.
Inferior nuchal line
- D.
Spinous process of C2
- E.
Mastoid process
Correct Answer
B. Transverse process of C1Explanation
The distal attachment of a muscle refers to the end of the muscle that is further away from the midline or center of the body. In this case, the correct answer is the transverse process of C1, which is a bony projection on the first cervical vertebra. This means that the muscle in question attaches to the transverse process of C1, providing stability and movement to that area of the spine.Rate this question:
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- 5.
Identify the muscle that attaches to the tagged area; what nerve supplies this muscle?
- A.
Semispinalis cervicis; anterior rami of spinal nerves
- B.
Obliquus capitis inferior; greater occipital
- C.
Rectus capitis posterior minor; suboccipital
- D.
Rectus capitis posterior major; suboccipital
- E.
Obliquus capitis superior; greater occipital
Correct Answer
D. Rectus capitis posterior major; suboccipitalExplanation
The muscle that attaches to the tagged area is the Rectus capitis posterior major. This muscle is supplied by the suboccipital nerve.Rate this question:
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- 6.
The following is true about the tagged nerve:
- A.
It carries parasympathetic fibers
- B.
It does not contain general somatic efferent fibers
- C.
It represents the ventral ramus of C1
- D.
It typically has dorsal root ganglion
- E.
It carries both somatic and visceral motor fibers
Correct Answer
E. It carries both somatic and visceral motor fibersExplanation
The correct answer is that the tagged nerve carries both somatic and visceral motor fibers. This means that it is responsible for transmitting signals for both voluntary movements (somatic motor fibers) and involuntary movements of organs (visceral motor fibers).Rate this question:
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.JPG "Identify the tagged structure")
.JPG "You are treating a patient who you suspect is suffering from a pinched nerve. You believe the lesion to be affecting the nerve that supplies the tagged muscle. Where does this nerve exit vertebral canal?")
.JPG "Which of the following statements is true about the structure that passes over the tagged area (in yellow)?")
.JPG "What is the distal attachment of the tagged muscle?")
.JPG "Identify the muscle that attaches to the tagged area; what nerve supplies this muscle?")
.JPG "The following is true about the tagged nerve:")
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