Anatomy Flashcards
What is the function of the lungs?
To oxygenate blood
How many lobes does the RIGHT lung have?
3
How many lobes does the LEFT lung has?
2 “ Left has Less Lobes and Lingula”
Where does the trachea bifurcate into the left and right main bronchi?
At the Carina
Functions of the Respiratory System
1.Provides tissue for gas exchange
2.Moves air in and out the body
3.Protects the body from dehydration, entry of pathogens and temperature fluctuations
4.Produces sound ( vocalization)
What are the bones of the nasal cavity?
Nerdy - Nasal bone
Medical - Maxilla
Students - Sphenoid
are often
Very - Vomer
PaLE - Palantine, Lacrimal , Ethmoid
What are the paranasal sinuses?
Some - Sphenoidal sinus
Medical- Maxillary sinus
students
Eat - Ethmoidal sinus
Fries- Frontal sinus
What epithelium lines the paranasal sinuses?
Psuedostratified Columnar Epithelium w Goblet cells
What is the blood supply of the nose?
External and Internal Carotid artery
What is the innervation of the nose?
Olfactory Nerve ( CN 1) - Olfaction
Trigeminal Nerve (CN 5) - General Sensation
Facial Never (CN 7) - Serous glands
What’s a next name for Nosebleeds?
Epistaxis
What are the 6 Paired bones of the facial skeleton?
I-Inferior nasal conchae
Love -Lacrimal
Zinger-Zygomatic
Patty -Palatine
Not- Nasal
Meal deal- Maxillary
“ I Love Zingers & Patty Not Meal deal”
What are the two single bones of the facial skeleton?
Mandible
Vomer
What is the Nasion?
It is the junction between frontal and nasal bones
Which three bones are the orbital margin formed by?
Frontal , Maxillary and Zygomatic
Which structure is bounded by the nasal bones and maxillae?
Anterior nasal aperture
What are the four processes of the maxilla bone?
Zygomatic
Frontal
Alveolar
Palatine
“ZFAP”
What are the functions of the zygomatic bone?
They help to form sides and floor of orbits and make up the prominence of the cheeks
Which bones extend from Extend from the zygomatic process of temporal bone to zygomatic process of maxilla?
Zygomatic bones
Which bones can be described as L shaped with horizontal and perpendicular plates?
Palatine Bones
Where are lacrimal bones located ?
Located on the medial aspect of the orbit between ethmoid and maxillary bones.
What is the name of the structure that has a dilated portion of nasolacrimal duct that conveys tears from
eyes to nasal cavity?
Lacrimal sac
What are the vertical portions of the mandible called?
Rami
Fill in the blank “ Each ramus of the mandible has 2 parts that projects upwards: The ________ process is ________ and the ________ is _________”
Coronoid process is anterior & Condylar process is posterior
True or False? The pterygopalatine fossa can act as a natural conduit for the spread of inflammatory and neoplastic diseases in head and neck.
TRUE!!
True or False? Only the sympathetic preganglionic fibers of the nerve of the pterygoid canal synapse at the pterygopalatine ganglion, while the parasympathetic postganglionic fibers travel through it.
FALSE!! Only PARASYMPATHETIC nerves synapse at the pterygopalatine ganglion, while the sympathetic postganglionic fibers travel through it.
Which three bones of the skull forms the wall of the pterygopalatine (sphenopalatine) fossa ?
Palantine
Sphenoid
Maxilla
“PMS forms sphenopalatine fossa”
What is the anterior wall of the sphenopalatine process formed by?
It is formed by the posterior surface of the maxilla
AM- Anterior wall- maxilla
The sphenoid bone forms which wall of the Sphenopalatine process?
Posterior wall and roof
PS- posterior wall - sphenoid bone
What is the medial wall of the sphenopalatine process formed by?
Lateral surface of Palatine bone
MP - medial wall -palatine
What are the neuromuscular structures that pass through the pterygopalatine fossa?
Maxillary nerve (CN V2)
Pterygopalatine ganglion
Terminal (third) part of the maxillary artery
Veins, as well as their associated branches
True or false? The maxillary nerve V2 gives motor innervation?
FALSE!! It is purely sensory
What is the origin of the Maxillary nerve?
- . It originates as the second division of the trigeminal ganglion in the cranial cavity
What structure does the Maxillary nerve travels through to enter the pterygopalatine fossa?
Foramen rotundum
At the pterygopalatine fossa, what structures do the maxillary nerve give rise to?
Zygomatic nerve
Posterior superior alveolar nerve
Two ganglionic branches
What is the name given to maxillary nerve after its main trunk continues through the infraorbital fossa?
Infraorbital nerve
Where is the pterygopalatine ganglion located?
At the pterygopalatine fossa, it sits inferior to the maxillary nerve (V2)and anterior to the opening of the pterygoid canal.
Where does the parasympathetic root of the pterygopalatine ganglion derive from?
Nervus intermedius (a branch of facial nerve CN VII) through greater petrosal nerve
Where does the maxillary artery originate from?
It originates near the neck of the mandible, travels through the pterygomaxillary fissure via the infratemporal fossa, and enters the pterygopalatine fossa as the terminal part/third of the maxillary artery
What are the branches of the third part of maxillary artery?
Infrorbital
Posterior superior alveolar
Sphenopalatine
Greater palatine
Pharyngeal
artery of pterygoid cana
Fill in the blanks “ ________ serves as a gateway for seven openings that communicate with the orbit, the nasal cavity, the oral cavity, the middle cranial fossa, and the infratemporal fossa.”
Pterygopalatine fossa
What is located on posterior wall of pterygopalatine fossa, between foramen rotundum and palatine canal. Communicates with middle cranial fossa and from there, it transmits nerve, artery, and vein of pterygoid canal?
Pterygoid canal
Where is the Pterygomaxillary fissure located?
Located between anterior and posterior wall of pterygopalatine fossa. Communicates with infratemporal fossa.
What is the function of the palatine canal?
It communicates with the oral cavity via the greater palatine and the lesser palatine canals, which transmit the greater palatine and lesser palatine nerves, respectively
Which structure transmits the greater palatine artery?
Palatine canal
Which two two neurovascular structures does the Pterygomaxillary fissure transmit?
Posterior superior alveolar nerve
Maxillary artery
What is the nerve supply for the skin of the external part of the nose?
External nasal nerve
Infratrochlear branch of nasociliary nerve
Nasal branches of infraorbital nerve
What is the blood supply for the skin of the nose?
. External nasal artery from anterior ethmoidal artery
. Dorsal nasal artery (terminal branch of ophtalmic artery) at root. Divides
into two branches: one anastomosing with angular artery, terminal branch of the facial artery
:one anastomosing with fellow artery on opposite side and with lateral nasal branch.
. Lateral nasal branch of facial artery
Where are the vocal folds located?
Vocal folds located just below where the tract of the pharynx splits into
trachea and esophagus.
What is located posteriorly to the thyroid gland and anteriorly to pharynx?
The larynx
What are the three unpaired cartilages?
Thyroid Cartilage
Cricoid cartilage
Epiglottic Cartilage
CET are unpaired
What are the paired cartilages?
Arytenoid Cartilage
Corniculate Cartilage
Cuniform Cartilage
“ ACC are paired with rich ppl”
What is known as the laryngeal prominence?
The Adams Apple (larger in males)
What structure is located superior to laryngeal prominence?
Superior thyroid notch
Fill in the blank “ Inferior horn articulates with cricoid cartilage through ________”
Cricothyroid joint
What structure connects superior border of thyroid cartilage to hyoid bone?
Thyrhyoid membrane
Which cartilage has an oblique ridge/line running from superior to inferior tubercles?
Thyroid cartilage
Where is the arch for the cricoid cartilage located?
Anteriorly
“Arch for anterior”
Where is the lamina of the cricoid cartilage located?
Posteriorly
Which cartilage is located posterior to the tongue and hyoid bone?
Epiglottic cartilage
Where is the Arytenoid cartilage located?
Located on superior border of lamina of cricoid cartilage
Fill in the blanks “Each arytenoid cartilage has a muscular process for attachment of ______ and vocal process for attachment of______.”
Intrinsic laryngeal muscles and Vocal ligaments
Which cartilage is described as Club-shaped pieces of elastic cartilage located anterior to corniculate cartilages?
Cuneiform cartilages
Which cartilage is described as horn-shaped pieces of elastic cartilage located at apex of each arytenoid cartilage?
Corniculate cartilages
What are the two joints of the Larynx?
Cricothyroid joint
Cricoarytenoid joint
What types of joints are the Cricothyroid joint and Cricoarytenoid joint?
Synovial joint
Which joint is located at the superior border of lamina of cricoid?
Crycoarytenoid joint
Which joint is located between inferior horn of thyroid cartilage and side of arch of cricoid cartilage?
Cricothyroid joint
What is the purpose of the cricoarytenoid joint?
Allows rotatory and lateral gliding movements
Which nerve passes behind the Cricothyroid joint becoming inferior laryngeal nerve?
Recurrent Laryngeal nerve
True or False? Thyroid, cricoid, and arytenoid cartilages all contain elastic cartilages.
FALSE!! They all contain hyaline cartilage
( tic TAC has hyaline cartilage)
What type of cartilage does Corniculate , Epiglottic ,Cuniform cartilages all have?
Elastic cartilage
What are the Extrinsic Membranes in the Larynx?
Thyrohyoid membrane
Cricotracheal membrane
What type of ligament is cricothyroid ligament?
Intrinsic
What are the extrinsic ligaments of the Larynx?
Hyoepiglottic ligament
Thyroepiglottic ligament
True or False? The Quarangular Membrane that extends between epiglottis and arytenoid cartilage is an Intrinsic membrane?
TRUE!!
Which structure connects the epiglottis to hyoid bone in the Larynx?
Hyoepiglottic ligament
Which structure connects lower border of cricoid cartilage to first cartilaginous ring of trachea?
Cricotracheal membrane
Which structure is not apart of the larynx, but anchors the larynx to the hyoid bone?
Thyrohyoid membrane
True or False? The Thyrohyoid membrane is perforated by the recurrent laryngeal nerve and inferior laryngeal vessels.
FALSE!! It is perforated by SUPERIOR LARYNGEAL NERVE and superior laryngeal vessels
Fill in the blank “ Thyroepiglottic ligament connects epiglottis to ____”
Thyroid cartilage
What structure is the anterior border of the Quadrangular membrane in the Larynx attached to?
Side of lower half of epiglottis
What structure is the posterior border of the Quadrangular membrane in the Larynx attached to?
Anterolateral surface of arytenoid
What is the function of suprahyoid muscles in the Larynx?
They elevate the larynx
What is the function of infrahyoid muscles in the Larynx?
They depress the larynx
What are the suprahyoid muscles (Extrinsic muscles) of the Larynx?
G- Geniohyoid muscles
G- Genioglossus muscles
Don’t- Digastric muscles
Sell- Stylohyoid muscles
My- Mylohyoid muscles
House - Hyoglossus muscles
“ GG Don’t Sell My House”
What are the Infrahyoid muscles(Extrinsic) of the larynx?
Thyrohyoid muscles
Omohyoid muscles
Sternothyroid muscles
Sternohyoid muscle
“TOSS”
What are the intrinsic muscles of the Larynx that act on the inlet( Opening connecting larynx to pharynx)
Aryepiglottic muscle
Oblique arytenoids
Assisted by transverse arytenoid and thyroepiglottic muscles
What type of muscles are Posterior cricoarytenoids, Lateral cricoarytenoids ,Oblique and transverse arytenoids, Thyroarytenoids and cricothyroids, Vocalis?
Muscles affecting the vocal ligaments
What are the sub divisions of Intrinsic Muscles?
Respiratory muscles (They move the vocal cordsapart and serve breathing)
Phonatory muscles (They move the vocal cords together and serve the production of voice)
Which muscle is the main respiratory muscle?
Posterior cricoarytenoid muscles
Which Phonatory muscles are Adductors?
Transverse Arytenoid
Oblique Arytenoid
Lateral Cricoarytenoid
“TOL”
The cricothyroid muscles and thyroarytenoid muscles are descibed as ?
Tensors
True or False? The Vocalis muscle is known as a vocal fold relaxer.
TRUE!!
Which intrinsic muscle of the Larynx is the ONLY muscle that is not supplied by the recurrent laryngeal nerve?
Cricothyroid Muscle ( It is supplied by the External laryngeal nerve (branch of the superior laryngeal nerve branch of the Vagus nerve which comes off of the Subclavian artery)
Which muscle is the ONLY muscle to open the rima glottidis?
Posterior cricoarytenoid muscle