Neck

by Farah Hasuna and Jalaluddin.

The superficial layer of the cervical fascia:

1	is attached to the trachea	F
2	splits to go both superficial and deep to the sternocleidomastoid muscle.	T
3	is attached to the spine of the scapula.	T
4	contributes to the formation of the cartoid sheath.	T
5	Superiorly attached to inferior nuchal line	F

 

The prevertebral layer of the cervical fascia:

6	encloses the deep muscles of the back of the neck and the scalene muscles.	T
7	splits to enclose the trapezius muscle.	F
8	covers the muscular floor of the posterior triangle.	T
9	extends into the thoracic cavity so that an abscess between this fascia and the visceral fascia could extend into the mediastinum.	T

The external jugular vein:

10	lies just deep to the platysma muscle.	T
11	penetrates the superficial layer of the (deep) cervical fascia.	T
12	is often visible through the skin of a living person.	T
13	courses with the lesser occipital nerve.	F
14	is formed by the union of the posterior auricular and facial veins.	F
15	courses across the sternohyoid muscle.	F

Carotid sheath:

16	Vagus nerve	T
17	Common carotid artery	T
18	Sympathetic trunk	F
19	External jugular vein	F

Posterior triangle:

20	Posterior border: ant. Border of trapezius	T
21	Contain Vagus nerve (XI cranial nerve)	F
22	Subdivisions: Inferior Belly of Omohyoid divides into occipital triangle above, subclavian  trianglebelow	T
23	Inferiorly: spine of scapula	F
24	Supplied by Transverse Cervical Artery only	F
25	Superficial cutaneous nerves of cervical plexus lie plastered beneath the investing layer	T

1.       Posterior triangle of the neck is subdivided by superior belly of omohyoid

2.       Pretracheal layer of deep cervical fascia forming the floor of posterior triangle of the neck

3.       Occipital triangle is a division of posterior triangle of the neck

4.       Base of submental triangle of the neck is formed by body of hyoid bone

5.       External carotid artery is a terminal branch of maxillary artery

6.       Carotid sinus acts as chemoreceptor which responding to the changes in oxygen, carbon dioxide and pH in the blood

7.       Sternohyoid is one of the infrahyoid muscles

8.       Nerve supply of  sternothyroid is hypoglossal nerve C1

9.       Sternohyoid and omohyoid are superficial to muscular triangle of the neck

10.   Common facial vein in carotid triangle of the nack draining into external jugular vein

11.   Posterior auricular artery supplies the back of the auricle

12.   The necktie should not be tied tightly as it can compress both internal carotid arteries which supplying the brain

Answers

1.            False. It is subdivided by inferior belly of omohyoid. The anterior triangle of the neck is                  subdivided by digastric and superior belly of omohyoid.

2.            False. The floor of posterior triangle of the neck is formed by prevertebral layer of deep cervical               fascia.

3.            True.

4.            True.

5.            False. The external carotid artery is one of terminal branches of common carotid artery.

6.            False. Carotid sinus acts as baroreceptor which regulating the blood pressure in the body             while carotid body acts as chemoreceptor.

7.            True.

8.            False. Sternothyroid is supplied by ansa cervicalis C1, C2, C3.

9.            True.

10.          False. The common facial nerve of carotid triangle draining into internal jugular vein.

11.          True.

12.          True.