Exam 1 Flashcards
What are the tributaries of the Internal Jugular vein?
- Inferior Petrosal Sinus
- Pharyngeal Veins
- Facial Vein
- Lingual Vein
- Superior Thyroid Vein
- Middle Thyroid Vein
What are the tributaries of the External Jugular vein?
- Retromandibular V
- Posterior Auricular V
- Posterior External Jugular V
- Anterior Jugular V
- Transverse Cervical V
- Suprascapular V
What is the term used for “Tongue Tied”
Ankyloglossia
T or F: The frenulum usually grows during the first year of life (further correcting itself if it is limiting tongue movement)
True
Ophthalmic N distributes to what area?
Face and scalp
Maxillary N distributes to what area?
Cheek and area lateral to the orbit (eye)
Mandibular N distributes to what area?
Chin and temporal region
What are the 5 subdivisions of the ophthalmic N?
- Supraorbital N
- Supratrochlear N
- Infratrochlear N
- External Nasal N
- Lacrimal N
What are the 3 subdivisions of the Maxillary N?
- Zygomaticotemporal N
- Zygomaticofacial N
- Infraorbital N. (Most frequently injured with blows to face, common in Boxers)
What are the 3 subdivisions of the Mandibular N?
- Auriculotemporal N
- Buccal N
- Mental N
What is the term used to describe sudden attacks of severe pain occurring in the area of sensory distribution of the trigeminal N?
Trigeminal Neuralgia (Tic Douloureux)
- often due to touch
- most common in maxillary division least in ophthalmic
What forms the cervical plexus?
Anterior primary rami of C1, C2, C3, and C4
What spinal segments supply sensory innervation to the skin of the upper limb?
C5, 6, 7, 8
What are the 2 parts of the ansa cervicalis?
- Superior Root (C1, or C1 and C2)
- Decends from the hypoglossal N
- Inferior Root (C2 and C3)
- Decends from cervical N branches
Superior and Inferior roots combine to form what?
Ansa Cervicalis (C1, C2, C3)
What 3 of the 4 infrahyoid muscles does the ansa cervicalis supply?
- sternohyoid
- sternothyroid
- omohyoid
***what supplies the 4th infrahyoid muscle (thyrohyoid)
Exclusively C1 fibers through the hypoglossal N.
Where does the phrenic N originate from?
C3, 4, 5 (keep the diaphragm alive.)
Phrenic N is motor to what muscle?
Diaphragm
Phrenic N is sensory to what muscles?
Thorax and abdomen
Where can the phrenic N be found?
Anterior surface of the anterior scalene muscle
What is torticollis?
Pathological contraction of the SCM.
What are the 3 types of torticollis?
- Congenital: due to Fibrous tissue tumor that dev. at or b4 birth
- Muscular: Due to birth injury
- Spasmodic: occurs in adults, due to abnormal tonicity.
What does the External Jugular Vein drain?
Face and scalp. (lots of cerebral blood)
Where is the External Jugular Vein formed?
below Parotid Gland (largest salary gland)
***What vein does the External Jugular Vein empty into?
Subclavian vein
What are the 6 tributaries of the External Jugular Vein?
- Retromandibular Vein
- Posterior Auricular Vein
- Posterior External Jugular Vein
- Anterior Jugular Vein
- Transverse Cervical Vein
- Suprascapular Vein
What muscle divides the neck into 2 different triangles?
SCM
What is the ONLY subdivision of the Anterior triangle that is unpaired?
Submental
What are the contents found in the carotid triangle?
Common and Internal carotid arteries
What bone is often broken in strangulation?
Hyoid bone
Where is the hyoid bone located?
between the mandible and larynx. Attachment point of many muscles
T or F: The hyoid bone does not articulate with any other bone.
True
What are the functions of the infrahyoid muscles and where do they attach?
Move the hyoid bone and larynx. Attach to the hyoid bone
What are the 4 infrahyoid muscles?
- Omohyoid
- Sternohyoid
- Sternothyroid
- Thyrohyoid
Why all the muscles to depress the hyoid bone and larynx?
- Swallowing
- Speech
- Breathing
- If hyoid bone is fixed, digastric depresses mandible
What are the 2 layers of the cervical fascia?
- Superficial Cervical Fascia
2. Deep Cervical Fascia
What is the name for the opening through which structures of the neck pass into the thorax?
Superior Thoracic Aperture (Thoracic Inlet)
What are the boundarys of the superior thoracic aperture?
- first thoracic vertebra
- first ribs and their cartilages
- manubrium of sternum
What is the term to describe lung collapse?
Atelectasis
Where does the thymus usually lie?
Behind the manubrium and the sternum. Lies inferior to the thyroid gland
What is the blood supply to the thymus?
Internal thoracic artery
What does the thyroid gland produce?
Thyroxine and calcitonin
What cervical levels does the thyroid gland lie at?
C5-T1
What are the 3 parts of the Thyroid gland? whats its shape?
left and right lobe and the isthmus (which connects the R and R halves). Its usually H or U shaped
50% of thyroid glands also have what?
pyramidal lobe
What muscle connects the isthmus of the thyroid to the hyoid bone?
Levator Glandulae thyroideae muscle
The Thyroid Ima Artery is a branch of what trunk?
Brachiocephalic trunk. Present in 10% of ppl. may be damaged in tracheotomy
What is a Goiter?
Enlargement of the thyroid gland. produces swelling in the anterior neck.
What are the 2 types of goiters?
- Endemic - dietary deficiency of iodine, gland enlarges to increase output. hormone is inactive, causes hypothyroidism
- Exothalmic - due to autoimmune disease, immunoglobins bind to receptor site, cause over active thyroid gland. Hyperthyroidism (graves disease)
T or F: Parathyroid glands are not essential to life.
False. they ARE essential to life
What is the function of the parathyroid gland?
calcium homeostasis (regulation)