Quest1 Flashcards
Is the region of the body that lies between the lower margin of mandible above suprasternal notch and upper border of clavicle below
Neck
It is strengthened by the cervical part of vertebral column, which is convex forward and support the skull.
Neck
Part of Respiratory system of the neck
(2) answers
Larynx and Trachea
Part of Alimentary or Digestive System of the neck (2) answer
Pharynx and Esophagus
The natural lines of cleavage of the skin are constant and run almost horizontally around the neck. This is important clinically because-an incision along a cleavage line will heal as narrow scar, where as one that crosses the lines will heal as a wide or heaped up scar
Skin of the neck
Is composed of a series of compartments, which are formed by bone and soft tissues
Head
5 bones and tissues of the head
- cranial cavity
- ears
-orbits
-nasal cavity
-oral cavity
Largest compartment that contains the brain
Cranial cavity
Associated members of the cranial cavity
Meninges
Simply, it composed of roof and floor
Cranial cavity
_ contain the eyes
Orbits
Cone-shaped chambers immediate inferior to the anterior aspect of the cranial cavity, and the apex of each cone is directed posteromedially
Orbits
The walls of this are the bones, whereas the base of each chamber can be ope and closed by the eyelids
Orbits
Are upper parts of the respiratory tract and are between the orbits
Nasal cavity
Have walls, floor, ceilings, which are predominantly composed of the bone and cartilage
Nasal cavity
Anterior openings of the nasal cavities are?
Nares (nostrils)
Posterior openings of the nasal cavity is?
Choanae (posterior nasal apertures)
Continues with the nasal cavities that are air-fiiled extension
Paranasal sinuses
Project laterally, superiorly, and posteriorly into surrounding bones.
Paranasal sinuses
The largest, the maxillary sinuses are inferior to the orbits
Paranasal sinuses of nasal cavity
Is inferior to the nasal cavities and separated from them by the hard and soft palates
Oral cavity
The oral cavity floor is formed by?
Soft tissues
Anterior opening of the oral cavity
Oral fissure
Posterior opening of the oral cavity
Oralpharyngeal isthmus
The 2 transitional areas
Infratemporal fossa
Pterygopalatine fossa
2 related surface anatomy of the head
Scalp
Face
An area between the posterior aspect (ramus) of the mandible and a flat region of the bone (lateral plate of the pterygoid process) just posterior to the upper jaw (maxilla)
Infratemporal fossa
This fossa is bounded by bine and soft tissues is a conduit for water ne of rhe major cranial nerves (mandibular nerve) which passes between the cranial and oral cavities
Infratemporal fossa
The trigeminal nerve of mandibular division is also called?
V3
Is just posterior to the upper jaw
Pteygopalatine fossa
Small fossa that communicates with the cranial cavity, the infratemporal fossa, the orbit, the nasal cavity, and the oral cavity
Pterygopalatine fossa
The major structure passing through this this _ fossa is maxillary nerve
Pterygopalatine fossa
Nerve of pterygopalatne fossa
Maxillary nerve V2
Is the anterior aspect of the head and contains a unique group of muscles that move the skin relatively to underlying bone and control the anterior openings to the orbits and oral cavity
Face
Covers the superior, posterior and the lateral regions of the head
Scalp
Boundary that Is along the inferior margins of the mandible and the bone features on the posterior aspect of the bone
Superior boundary
Is higher that the anterior neck to connect cervical viscera with the posterior openings of the nasal and oral cavity
Posterior neck
What boundary of the neck extends from the top of the sternum along the clavicle, and onto the adjacent acromion, bony projection of the scapula
Inferior boundary
Contains the cervical vertebrae and associated postural muscle
Vertebral compartment
Contains important glands and parts of the respiratory and digestive tracts that pass between the head and the thorax
Visceral compartment
One on each side, contain the major or blood vessels and the vagus nerve
Vascular compartment
Are enclosed by musculofascial collar
4 compartment of the neck
4 Vascular parts of the neck
-Common carotid artery
-Internal jugular veins
-Vagus nerve
-Deep lymph nodes
8 Cutaneous Nerves of neck
-Greater occipital nerve
-Lesser occipital nerve C2
-Great auricular nerve C2 and C3
-Transverse cutaneous nerve C2 and C3
-Supraclavicular nerves C3 and C4
-Medial supraclavicular nerve
-Intermediate supraclavicular nerve
-Lateral supraclavicular nerve
Is a branch of the posterior ramus of the 2nd cervical nerve. The 1st cervical nerve has no cutaneous branch.
Greater occipital nerve
Hooks around the accessory nerve and ascends along the posterior border of the sternocleidomastoid muscle to supply the skin over the lateral part of the occipital region and the medial surface of the auricle
Lesser occipital nerve
Ascends across the sternocleidomastoid muscle and divides into branches that supply the skin over the angle of the mandible, the parotid gland, and on both surface of the auricle.
Greater auricle nerve
Emerges from behind the middle of the posterior border of the sternocleidomastoid muscle
Transverse cutaneous nerve
Emerge from beneath the posterior border pf the sternocleidomastoid muscle and descend across the side of the neck.
Supraclavicular nerve
Crosses the medial end of the clavicle and supplies the skin as far as the median plane
Medial supraclavicular nerve
Crosses the middle of the clavicle and supplies the skin of the chest wall
Intermediary supraclavicular nerve
Cross the lateral end of the clavicle and supplies the skin over the shoulder and the upper half of the deltoid muscle
Lateral supraclavicular nerve
When the sternocleidomastoid miscle contracts, it appears as an oblique band crossing the side of the neck from the sternoclavicular joint to the mastoid process of the skull. It divides the neck into anterand posterior triangles
Triangles of the neck
Anterior triangle
-submental triangle
-submandibular triangle
-carotid triangle
-muscular triangle
Posterior triangle
-occipital triangle
-subclavian triangle
Enclosed laterally by the two sternocleidomastoid muscle; superiorly by the lower border of the mandible and medially by the anterior midline of the neck
Anterior triangle pf the neck
Contains larynx , esophagus, and trachea
Anterior triangle of the neck
Bordered by the posterior margin of the sternocleidomastoid muscle, the anterior margin of the trapezius muscle and the intermediate third of the clavicle
Posterior triangle of the neck
Viscera of the neck
-esophagus
-larynx
-parathyroid glands
-pharynx
-thyroid gland
-trachea
Is bound laterally by the first rib, anterior by the manubrium, and posteriorly by the T1 vertebrae. From anterior to posterior.
Rooth of the Neck
6 roots of the neck
-clavicle
-subclavian vein
-anterior scalene muscle with phrenic nerve
-subclavian artery
-branchial plexus
-middle scalene muscle
Endocrine gland
Thyroid gland
Highly vascular organ
Thyroid gland
Surrounded by the pretracheal layer of the deep neck fascia (thyroid sheath)
Thyroid Gland
Contains the right lobe, left lobe, and isthmus
Thyroid gland
Moves as one with the larynx and the trachea
Thyroid gland
Contains thyroid capsule and sheath
Thyroid gland
Also called suspensory ligament
Berry ligament
Fixes the lobes to the cricoid cartilage
Berry ligament
Usually 4 in number
Parathyroid gland
Lie within the capsule of the gland in its posterior surface
Parathyroid gland
More constant in position, at the level of the middle of the posterior border
Two superior of parathyroid
Vary in postion
Inferior of parathyroid
Cartilaginous and membranous tube
Trachea
Starts from the lower border of the cricoid cartilage
Trachea
Ends by dividing into two main bronchi ( Carina point) at the level of the 4th and 5th thoracic vertebrae
Trachea
Muscular tube
Esophagus
25 cm long
Esophagus
Begins at the level of the cricoid cartilage, C6
Esophagus
From the pharynx to stomach
Esophagus
A branch of superior thyroid artery
External carotid artery (ECA)
Inferior branch of thyroid artery
Thyrocervical trunk
Arises from the bracheocephalic trunk or aortic arch
Thyroid ima artery
What vein does the superior thyroid vein and middle thyroid vein goes?
Internal jugular vein (IJV)
What vein does the bracheocephalic vein goes?
Inferior thyroid vein
Two main bronchi that divides the trachea at the level of the 4th and 5th thoracic vertebrae is called?
Carina point
Blood supply of the trachea is?
Inferior thyroid arteries
Nerve supply of trachea
-vagus
-recurrent laryngeal nerve
-sympathetic trunk
Blood supply of esophagus
Inferior thyroid arteries
Veins
Nerve supply of esophagus
Recurrent laryngeal nerve and sympathetic treatment trunks
Is the part of the digestive of alimentary system that situated posterior to the nasal and oral cavities and posterior to the larynx.
Pharynx
Extends from the base of the skull down the inferior border of the cricoid cartilage of (C6 vertebral level) where it becomes continuous with the esophagus
Pharynx
Is the common channel for deglutition or swallowing and respiration, and the food and air pathways cross each other in the pharynx
Pharynx
3 subdivisions of pharynx
-Nasopharynx
-Oropharynx
-Laryngopharynx
The posterior portion of the nasal cavity with its common function as part of the respiratory system
Nasopharynx
Extend inferior war from the soft palate to the superior border of epiglottis
Oropharynx
Extends from superior border of epiglottis to inferior border of cricoid cartilage where it becomes continuous with the esophagus
Laryngopharynx
2 types of muscle that form the walls of the pharynx
-longitudinal
-circular
Type of pharynx muscle that are all innervated by the vagus nerve (CN X)
Circular muscle
3 Circular Muscle
-superior pharyngeal constrictor
-middle pharyngeal constrictor
-inferior pharyngeal constrictor
Constrictor that found in Oropharynx
Superior pharyngeal constrictor
Is found in the laryngopharynx
Middle pharyngeal constrictor
Is found in Laryngopharynx and has two components. The superior component (thyropharyngeus) has oblique fibers that attach to the thyroid cartilage and the inferior component (cricopharyngeus) has horizontal fibers that attach to the cricoid cartilage
Inferior pharyngeal constrictor
Superior component of inferior pharyngeal constrictor which has oblique fibers that attach to thyroid cartilage
Thyropharyngeus
Inferior component of inferior pharyngeal constrictor that has horizontal fibers that attach to the cricoid cartilage
Cricopharyngeus
A pharynx muscle that shorten and widen the pharynx, and elevate the larynx during swallowing
Longitudinal muscles
3 longitudinal muscles
-stylopharyngeus
-palatopharyngeus
-salpingopharyngeus
From the styloid process of the temporal bone to the pharynx, innervated by the glossopharyngeal nerve (CN IX)
Stylopharyngeus
From the hard palate of the oral cavity to the pharynx, innervated bu the vagus nerve (CN X)
Palatopharyngeus
From the eustachian tube to the pharynx, innervated by the vagus nerve CN X. In addition to contributing to swallowing, it also opens the eustachian tube to equalize the pressure in the middle ear with the atmosphere
Salpingopharyngeus
The innervation of the majority of the pharynx is achieved by?
Pharyngeal plexus
Pharyngeal plexus is comprises of?
Braches of GLOSSOPHARYNGEAL NERVE (CN IX), VAGUS NERVE (CN X) and sympathetic fibers of the superior cervical ganglion
Each of the 3 sections of pharynx have a different innervation
Sensory
Innervation of Nasopharynx
Maxillary nerve ( CN V2)
Innervation of the oropharynx
Glossopharyngeal nerve (CN IX)
Innervation of laryngopharynx
Vagus nerve (CN X)
In the _, the muscle of the pharynx are innervated by the vagus nerve CN X, except for the stylopharyngeus, which is innervated by the glossopharyngeal nerve CN IX
Motor
Arterial supply is via branches of the _: ascending pharyngeal, lingual, facial and maxillary arteries
External Carotid Artery
Venous drainage is achieved by the _, which drains into the internal jugular vein
Pharyngeal venous plexus
Is located in the anterior compartment of the neck, suspended from the hyoid bone, and spanning between C3 and C6. It is continuous inferiorly with the trachea, and opens superiorly into the laryngeal part of the pharynx
Larynx
3 sections of the internal cavity of the larynx
-supraglottis
-glottis
-subglottis
From the inferior surface of the epiglottis to the vestibular folds (false vocal cords)
Supraglottis
Contains vocal cords and 1cm below them. The opening between the vocal cord called rima glottidis
Glottis
From the inferior border of the glottis to the inferior border of the cricoid cartilage
Subglottis
The epithelium of the interior surface of the larynx is?
Ciliated columnar epithelium
Act to move the larynx superiorly and inferiorly
Extrinsic muscles
This muscle comprised of the suprahyoid and infrahyoid groups, and th stylopharyngeus
Extrinsic muscle
The general rule of suprahyoid muscle and stylopharyngeus is to
Elevate larynx
General rule of the Infrahyoid
Depression of the larynx
Is the part of the head that extends the superciliary arches anteriorly to the external occipital protuberance and superior nuchal lines posteriorly
Scalp
Laterally it continues inferiorly to the zygomatic arch
Scalp
Layers of the scalp
-Skin
-Connective tissue
-aponeurotic layer/ aponeurosis
-loose connective tissue
-pericranium
This unit sometimes referred to ad the scalp proper and is the tissue torn away during serious injury
Scalping
Is thick, hair bearing and contains numerous sebaceous glands
Skin
Is fibrofatty, the fibrous septa uniting the skin to the underlying aponeurosis of the occipitofrontalis muscle. Numerous arteries and veins are found in this layer. The arteries are branches of the external and internal carotid arteries, and a free anastomosis takes place between them.
Connective tissue
Is a thin, tendinous sheet that unites the occipital and frontal bellies of the occipitofrontalis muscle. The lateral margins of the aponeurosis are attached to the temporal fascia
Aponeurosis
Occupies the subaponeurotic space and loosely connects the epiceanial aponeurosis to the periosteum of the skull. The areolar tissue contains a few small arteries, but it also contains some important emissary veins. T
Loose connective (areolar) tissue
Are valveless and connect the superficial veins of the scalp with the diploic veins of the skull bones and with the intracranial venous sinuses
Emissary veins
Called dangerous laters of scalp-emissary veins open here and carry any infections inside the brains or cause bleeding or black eye
Loose connective tissue
Which is the periosteum covering the outer surface of the skull bones
Pericranium
It has frontal belly anteriorly, an occipital belly posteriorly, and aponeurotic tendon (epicranial aponeurosis( connective the two
Occipitofrontalis muscle
It is the 4 parts of the occipitofrontalis muscle or in the epicranial aponeurosis
-frontal belly
-superior temporal line
-occipital belly
-superior nuchal line
-external occipital protuberance
Venous drainage pf the scalp
External jugular vein
Extends superiorly to the hair line, inferiorly to the chin and base of the mandible and on each side to auricle
Face
Is common for both face and scalp
Forehead
Lymph nodes of the scalp or drainage
-occipital
-mastoid
-parotid
-buccal
-submental
-submandibular
-jugulo-omohyoid
-superficial cervical
-deep cervical
Innervation of the scalp of anterior to the ear and the vertex
Four divisions of the trigeminal nerve
4 Anterior to the ear and the vertex nerve
-supratrochlear nerve
-supraorbital nerve
-zygomaticotemporal nerve
-auriculotemporal nerve
4 posterior to the ears and the vertex nerve
-greater auricular nerve
-lesser occipital nerve
-greater occipital nerve
-third occipital nerve
Front part of the head that has the eyes, nose and mouth
Face
Is rich in sebaceous goand and swear gland
Facial skin
How many bones are there in our face
14 bones
What are the 2 single bones of the face
-vomer
-mandible
What are the 12 paired bones of the face?
-2 maxillary
-2 palatine
-2 zygomatic
-2 lacrimal
-2 nasal
-2 inferior nasal conchae
Bones of the face are:
-vomer
-mandible
-2 maxillary
-2 palatine
-2 zygomatic
-2 lacrimal
-2 nasal
-2 inferior nasal conchae
Develop from the 2nd pharyngeal arch and are innervated by the branches of the fascial nerve
Muscles of the face
Are in the superficial fascia, with origins from either bone or fascia, and insertion into the skin
Muscle of the face
Controls expression of the face
Muscle of the face
Acts as sphincters and dilators of the orifices of the face
Muscle of the face
What are the muscle group of the face
-orbital group
-nasal group
-oral group
-other muscle group
2 Orbital group muscle
-orbicularis oculi
-corrugator suppercilli
3 parts of orbicularis oculi
-orbital part
-palbebral part
-lacrimal part
Originate from the medial part of the medial palpebral ligament and from concentric rings, return to the point of the origin (outer)
Orbital part
Originate from the lateral part of medial palpebral ligament, insert into the lateral palpebral raphe (inner)
Palpebral part
Originate from the lacrimal fascia and lacrimal bone insert nto upper and lower tarso (small)
Lacrimal part
Skin is supplied by _ nerve, except for the small area over the triangle of the mandible and the parotid gland
Trigeminal nerve (V)
3 major divisions of trigeminal nerve
-Opthalmic nerve (V1)
-maxillary nerve (V2)
-Mandibular nerve (V3)
Parotid gland is supplied by?
Great auricular nerve (C2 and C3)
5 facial nerves
-temporal
-zygomatic
-buccal
-marginal mandibular
-cervical
Maxillary and mandibular nerve are involuntary and excruciating pain in the region of distribution of these nerve
Trigeminal neuralgia
Whole face paralyzed- in infranuclear lesions of facial nerve
Bell’s Palsy
How many bones in the skull?
22
How many bones in the cranial?
8
How many bones in the facial?
14
What are the 8 bones of the cranial?
-
-frontal bone
-occipital bone
-ethmoid bone
-sphenoid bone
-2 parietal bone
-2 temporal bone
Fibrous bundle of tissue that connect the bones of the skull
Cranial suture
The 3 cranial suture
-coronal (frontal) suture
-sagittal suture
-lambdoid suture
At birth, fetal skull bones are incomplete and completed by?
Fontalles
Unossified remnants of fibrous that is a hyaline cartilage membranes between fetal skull bones which allow the brain grow and develop in the womb and infancy that compresses during birth
Fontalles
4 division or parts of the fontalles
-anterior
-posterior
-mastoid
-sphenoid
2 process of the development of the fetal skull
Intramembranous ossification
Endochondral ossification
Occur during fetal development the develop sheets connective tissue and begins around and ossification center which new bone branches outward and develops blood supply
Intramembranous ossification
Ossification which cartilage of replaced by bone
Endochondral ossification