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Scalp, neck, fascial layers

5 layers of scalp Skin. Connective tissue. Aponeurosis. Loose CT. Periosteum.
Connective tissue (what do you find) Dense, hair follicles, arteries, veins, cutaneous nerves found here
Aponeurosis (unites...) Unites frontalis & occipitalis mm.
Loose connective tissue Allows movement of 3 superficial layers as one unit. Infections can get in
Periosteum On bones of calvarium
Cervical fascia (what) Covers and compartmentalizes principal muscle masses, viscera and main nerves and blood vessels of neck.
Cervical fascia 3 layers Superficial (investing) layer of cervical fascia. Pretracheal layer. Prevertebral layer.
Superficial (investing) layer of cervical fascia Single sheet, cylindrical. Corresponding to column of neck. Surrounds all deeper parts of neck. Splits into 2 sheets to enclose sternocleidomastoid & trapezium muscles.
Superficial (investing) layer of cervical fascia (attachments) Post midline - ex occipital protuberance, nuchal lig, SP of C7. Sup midline - ex occ. protuberance, sup nuchal line, mastoid process, inf mandible border. Inf - ant & post surfaces of manubrium, med 1/3 clavicle, scapula. Ant - hyoid bone
Pretracheal layer of cervical fascia (compartmentalizes 6) Central part of neck. Compartmentalizes pharynx, esophagus, larynx, trachea, thyroid gland, parathyroid gland
Buccopharyngeal fascia (part of, covers) Part of pretracheal layer. Covers pharynx & is prolonged down over post surface of esophagus.
Prevertebral layer of cervical fascia Encloses vertebral column & assoc. muscles. Extension of vertebral fascia of back. Attached to tips of TPs. Post attaches to ex occipital protuberance, nuchal lig, spine of C7
Fascia of infrahyoid muscles (layers, blend with..) 2 layers (superficial, deep) in ant 1/2 of neck. Blend with superficial cervical fascia along medial line.
Superficial layer of fascia of infrahyoid muscles (encloses, blends with..) Encloses sternohyoid, omohyoid. Blends with superficial cervical fascia post to sternocleidomastoid muscle
Deep layer of fascia of infrahyoid muscles (encloses, extends..) Encloses sternothyroid, thyrohyoid. Extends laterally to carotid sheath
Carotid sheath Tubular investment of internal and common carotid arteries, internal jugular v, vagus (CN10). Sympathetic chain runs next to, not in.
Superficial layer Encloses all except most superficial structures of neck
Prevertebral layer Forms an enclosure for a compartment containing cervical vertebrae & associated m/a/v/n
Pretracheal & Buccopharyngeal fasciae Delimits a compartment which lodges all visceral organs contained in neck
Carotid sheath Longitudinal neurovascular enclosure
Interfascial spaces Between fascial layers
Retropharyngeal space (borders) Between pretracheal fascia (ant), prevertebral fascia (post), carotid sheaths (lat), base of skull (sup), post mediastinum (inf)
Fascia (clinical importance) Holds back infection
Created by: Rungladwin



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