Intermediate Sternocleidomastoid Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which surface relationship describes the external jugular vein?
- It passes through the muscle belly
- It crosses superficial to sternocleidomastoid
- It lies within the carotid artery
- It is always deep to the prevertebral muscles
Q2. Where is the carotid sheath relative to sternocleidomastoid?
- Inside the muscle fibers
- Superficial to platysma
- Deep and medial to sternocleidomastoid
- Posterior to the cervical vertebral bodies
Q3. Which structure pierces the deep surface of sternocleidomastoid to supply it and then enters the posterior triangle?
- Lingual nerve
- Phrenic nerve
- Recurrent laryngeal nerve
- Accessory nerve
Q4. What sensory or proprioceptive contribution reaches sternocleidomastoid from cervical spinal nerves?
- C2-C3 cervical spinal nerves
- C5-T1 only
- T5-T8 only
- S1-S3 only
Q5. What lies between the sternal and clavicular heads near their inferior attachments?
- Infratemporal fossa
- Lesser supraclavicular fossa
- Submandibular triangle
- Carotid canal
Q6. Which border of sternocleidomastoid forms part of the anterior triangle boundary?
- Anterior border
- Posterior border
- Superior surface
- Deep surface only
Q7. Which border of sternocleidomastoid forms part of the posterior triangle boundary?
- Medial clavicular border
- Inferior surface
- Posterior border
- Anterior border
Q8. Where do the superficial cutaneous branches of the cervical plexus emerge relative to sternocleidomastoid?
- At the anterior border beside the trachea
- Through the sternal head
- Near the midpoint of its posterior border
- At the mastoid insertion only
Q9. How can sternocleidomastoid assist forced inspiration?
- By closing the glottis
- By depressing the first rib
- By elevating the sternum and clavicle
- By contracting the diaphragm directly
Q10. What head position results from isolated unilateral sternocleidomastoid shortening?
- Bilateral shoulder elevation
- Ipsilateral tilt with contralateral facial rotation
- Contralateral tilt with ipsilateral facial rotation
- Pure neck extension without rotation