Podcast
Questions and Answers
What is the nerve supply of the platysma muscle?
What is the nerve supply of the platysma muscle?
- Hypoglossal nerve
- Ansa cervicalis (ventral rami of C1-C3)
- Accessory nerve (motor) and branches from ventral rami of C2 and C3
- Cervical branch of facial nerve (correct)
What is the action of the sternocleidomastoid (SCM) muscle when contracted bilaterally?
What is the action of the sternocleidomastoid (SCM) muscle when contracted bilaterally?
- Flexion of the head and neck, especially against resistance (correct)
- Depression of the hyoid bone
- Lateral flexion of the head and neck to the same side
- Rotation of the head and neck to the opposite side
Which muscle is responsible for depressing the hyoid bone?
Which muscle is responsible for depressing the hyoid bone?
- Sternothyroid
- Sternohyoid (correct)
- Omohyoid
- Thyroid
Where does the inferior belly of the omohyoid muscle attach?
Where does the inferior belly of the omohyoid muscle attach?
What is the function of the thyroid muscle?
What is the function of the thyroid muscle?
Which muscle divides the anterolateral part of the neck into anterior and posterior triangles?
Which muscle divides the anterolateral part of the neck into anterior and posterior triangles?
What structure extends anteriorly from the inferior border of the mandible to the superior border of the manubrium?
What structure extends anteriorly from the inferior border of the mandible to the superior border of the manubrium?
Which compartment of the neck contains the cervical vertebrae, spinal cord, cervical spinal nerves, and muscles?
Which compartment of the neck contains the cervical vertebrae, spinal cord, cervical spinal nerves, and muscles?
Which nerve innervates the skin over the angle of the mandible, parotid gland, and both surfaces of the lower part of the auricle?
Which nerve innervates the skin over the angle of the mandible, parotid gland, and both surfaces of the lower part of the auricle?
At what level is the hyoid bone located?
At what level is the hyoid bone located?
Which nerve innervates the skin over the upper part of the pectoral major and deltoid muscles?
Which nerve innervates the skin over the upper part of the pectoral major and deltoid muscles?
Which nerve innervates the skin over the lateral part of the occipital region and upper part of the medial surface of the auricle?
Which nerve innervates the skin over the lateral part of the occipital region and upper part of the medial surface of the auricle?
