Systemic Anatomy for Respiratory Technology

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which arteries originate from branches of the external carotid artery?

  • Sphenopalatine artery (correct)
  • Anterior ethmoidal artery
  • Olfactory artery
  • Posterior ethmoidal artery

What is Little's Area known for?

  • It houses the pterygoid venous plexus.
  • It is the major site of epistaxis. (correct)
  • It is part of the olfactory system.
  • It is a site for osteogenesis.

Which of the following arteries does NOT contribute to Kiesselbach’s Plexus?

  • Anterior ethmoidal artery
  • Inferior labial artery (correct)
  • Greater palatine artery
  • Superior labial artery

Which nerve is primarily responsible for general sensation in the nasal cavity?

<p>Trigeminal nerve (D)</p> Signup and view all the answers

What forms the anterior sloping part of the roof of the nasal cavity?

<p>Nasal bones and nasal part of frontal bone (A)</p> Signup and view all the answers

What is the risk associated with a fracture of the cribriform plate of the ethmoid bone?

<p>Cerebrospinal fluid leaking into the nasal cavity (C)</p> Signup and view all the answers

Which of the following correctly identifies the components of the nasal septum?

<p>Perpendicular plate of ethmoid, vomer, and cartilaginous part (B)</p> Signup and view all the answers

What structural feature separates the nasal cavity from the anterior cranial fossa?

<p>Roof of the nasal cavity (A)</p> Signup and view all the answers

What causes a deviated nasal septum?

<p>Trauma, developmental error, or unequal growth (A)</p> Signup and view all the answers

Which nasal concha is the smallest and located in the posterior part of the nasal cavity?

<p>Superior concha (B)</p> Signup and view all the answers

What does the space underneath each nasal concha refer to?

<p>Meatus (C)</p> Signup and view all the answers

What is an important consideration for patients experiencing CSF rhinorrhea?

<p>It may indicate a serious condition involving the cranial cavity (A)</p> Signup and view all the answers

Which parts comprise the framework of the external nose?

<p>Nasal bones and frontal processes of the maxillae (D)</p> Signup and view all the answers

What anatomical structure separates the nasal cavity into right and left halves?

<p>Nasal septum (D)</p> Signup and view all the answers

What is the clinical significance of Little's area in the nose?

<p>It is a common site for nasal bleeding. (D)</p> Signup and view all the answers

Which of the following structures is NOT part of the upper respiratory tract?

<p>Bronchi (D)</p> Signup and view all the answers

The nasal cavity extends from which anatomical feature to the posterior nasal apertures?

<p>Nostrils (D)</p> Signup and view all the answers

Which walls make up each half of the nasal cavity?

<p>Floor, roof, lateral wall, medial wall (B)</p> Signup and view all the answers

The medial wall of the nasal cavity is characterized by which feature?

<p>Vertical nasal septum (D)</p> Signup and view all the answers

What anatomical structures are located in the lower respiratory tract?

<p>Bronchi and lungs (B)</p> Signup and view all the answers

Which arteries form an anastomotic plexus in Little's Area?

<p>Sphenopalatine and superior labial arteries (A), Greater palatine and lateral nasal arteries (C)</p> Signup and view all the answers

What is the primary clinical significance of Kiesselbach's Plexus?

<p>It is a common site for nosebleeds. (D)</p> Signup and view all the answers

Which artery is NOT a branch of the external carotid artery?

<p>Anterior ethmoidal artery (A)</p> Signup and view all the answers

Which of the following statements about the nasal cavity is correct?

<p>The anterior region of the nasal cavity is highly vascularized. (C)</p> Signup and view all the answers

Which of the following is primarily responsible for parasympathetic innervation in the nasal cavity?

<p>Pterygopalatine ganglion (B)</p> Signup and view all the answers

What are the two main divisions of the nose?

<p>External nose and nasal cavity (D)</p> Signup and view all the answers

Which bones contribute to the framework of the external nose?

<p>Nasal bone, maxilla, frontal bone (C)</p> Signup and view all the answers

What is the primary structural feature that divides the nasal cavity into right and left halves?

<p>Nasal septum (C)</p> Signup and view all the answers

Which of the following correctly describes the anatomy of the nasal cavity?

<p>It extends from the nostrils to the choanae and has four walls (A)</p> Signup and view all the answers

What is the clinical significance of the nasal cavity's lateral wall?

<p>It houses the nasal conchae that increase air turbulence (A)</p> Signup and view all the answers

What term is used to describe the space underneath each nasal concha?

<p>Nasal recess (C)</p> Signup and view all the answers

Which of the following structures forms the roof of the nasal cavity?

<p>Frontal bone and ethmoid bone (B)</p> Signup and view all the answers

What is located in the anterior part of the nasal cavity?

<p>Anterior nasal apertures (B)</p> Signup and view all the answers

Which bone contributes to the formation of the anterior sloping part of the roof of the nasal cavity?

<p>Frontal bone (A)</p> Signup and view all the answers

What is the primary structure responsible for separating the nasal cavity from the anterior cranial fossa?

<p>Cribriform plate of ethmoid (B)</p> Signup and view all the answers

What is a common cause of nasal obstruction related to the nasal septum?

<p>Deviated nasal septum (C)</p> Signup and view all the answers

Which of the following nasal conchae is an independent bone?

<p>Inferior concha (C)</p> Signup and view all the answers

What potential complication can arise from a fracture of the cribriform plate?

<p>CSF rhinorrhea (D)</p> Signup and view all the answers

Which structures primarily form the nasal septum?

<p>Perpendicular plate of ethmoid, Vomer, Cartilaginous part (D)</p> Signup and view all the answers

How can a deviated nasal septum be corrected?

<p>Surgery (B)</p> Signup and view all the answers

What structure is formed by the smaller projections from the lateral wall of the nasal cavity?

<p>Conchae (C)</p> Signup and view all the answers

Flashcards

Respiratory Airway Divisions

The respiratory system is divided into upper (nose, pharynx, larynx) and lower (trachea, bronchi, lungs) airways.

External Nose Framework

The external nose's structure is primarily composed of bone (nasal bones, frontal processes of maxillae, nasal part of frontal bone) and cartilage.

Nasal Cavity Location

The nasal cavity is situated between the eye sockets (orbit) and below the front part of the skull (anterior cranial fossa).

Nasal Cavity Walls

Each side of the nasal cavity has four walls: floor, roof, lateral, and medial (septal).

Signup and view all the flashcards

Nasal Septum

The vertical wall separating the right and left halves of the nasal cavity.

Signup and view all the flashcards

Nasal Cavity Opening

The nasal cavity opens to the pharynx through the posterior nasal apertures (choanae).

Signup and view all the flashcards

External Nose Parts

The external nose has a bony and cartilaginous part.

Signup and view all the flashcards

Upper Respiratory Tract

Consists of the nose, paranasal sinuses, pharynx, and larynx.

Signup and view all the flashcards

Sphenopalatine Artery Origin

The sphenopalatine artery arises from the maxillary artery, a branch of the external carotid artery.

Signup and view all the flashcards

Ethmoidal Arteries Origin

The anterior and posterior ethmoidal arteries are branches of the ophthalmic artery, which itself is a branch of the internal carotid artery.

Signup and view all the flashcards

Little's Area & Kiesselbach's Plexus Location

Little's area is the anterior region of the nasal septum, where Kiesselbach's plexus, a network of anastomosing arteries, is located.

Signup and view all the flashcards

Kiesselbach's Plexus Significance

Kiesselbach's plexus makes the anterior nasal septum a common site for nosebleeds (epistaxis) because the vessels are close to the surface.

Signup and view all the flashcards

Nasal Cavity Arteries

The nasal cavity is supplied by branches of the external carotid artery (sphenopalatine, greater palatine, superior labial, lateral nasal) and the internal carotid artery (anterior and posterior ethmoidal).

Signup and view all the flashcards

Roof of Nasal Cavity

The top part of the nasal cavity, formed by the nasal bones, frontal bone, cribriform plate of ethmoid, and body of the sphenoid.

Signup and view all the flashcards

CSF Rhinorrhea

Leakage of cerebrospinal fluid (CSF) into the nasal cavity, often due to a fracture of the cribriform plate.

Signup and view all the flashcards

Floor of Nasal Cavity

The bottom part of the nasal cavity, formed by horizontal plate of palatine bone and palatine process of maxilla.

Signup and view all the flashcards

Deviated Nasal Septum

A condition where the nasal septum is not straight, often due to trauma or development issues, causing nasal obstruction.

Signup and view all the flashcards

Nasal Conchae

Three bony projections in the lateral walls of the nasal cavity: superior, middle, and inferior.

Signup and view all the flashcards

Inferior Nasal Concha

An independent bone forming part of the lateral wall of the nasal cavity.

Signup and view all the flashcards

What are the main parts of the external nose?

The external nose consists of a bony part (nasal bones, frontal processes of maxillae, nasal part of frontal bone) and a cartilaginous part.

Signup and view all the flashcards

What are the two key openings of the nasal cavity?

The nasal cavity opens to the outside through the nostrils (anterior nasal apertures) and to the pharynx through the posterior nasal apertures or choanae.

Signup and view all the flashcards

What separates the nasal cavity into halves?

The nasal septum is a vertical midline wall that divides the nasal cavity into right and left halves.

Signup and view all the flashcards

What is Little's area?

Little's area is the anterior region of the nasal septum, where Kiesselbach's plexus, a network of anastomosing arteries, is located.

Signup and view all the flashcards

Where is the roof of the nasal cavity located?

The roof of the nasal cavity is formed by the nasal bones, frontal bone, cribriform plate of ethmoid, and body of the sphenoid.

Signup and view all the flashcards

What is the floor of the nasal cavity made of?

The floor of the nasal cavity is formed by the horizontal plate of the palatine bone and the palatine process of the maxilla.

Signup and view all the flashcards

What are the three types of nasal conchae?

The nasal cavity has three bony projections on its lateral walls: superior, middle, and inferior nasal conchae.

Signup and view all the flashcards

Why is Little's area clinically important?

Little's area is a frequent site of nosebleeds (epistaxis) due to the abundance of superficial blood vessels.

Signup and view all the flashcards

Kiesselbach's Plexus

A network of anastomosing arteries found in the anterior region of the nasal septum, where the greater palatine, sphenopalatine, superior labial, and anterior ethmoidal arteries connect.

Signup and view all the flashcards

Little's Area

The specific area of the anterior nasal septum where Kiesselbach's plexus is prominent.

Signup and view all the flashcards

Sphenopalatine Artery

This artery originates from the maxillary artery and supplies blood to the nasal cavity.

Signup and view all the flashcards

Ethmoidal Arteries

The anterior and posterior ethmoidal arteries supply the nasal cavity, branching from the ophthalmic artery.

Signup and view all the flashcards

Nasal Cavity Blood Supply

The nasal cavity is supplied by arteries from both the external and internal carotid arteries, providing a complex network crucial for maintaining the delicate tissues.

Signup and view all the flashcards

What forms the lateral wall?

The lateral wall of the nasal cavity is formed by three shelf-like bony projections called the superior, middle, and inferior nasal conchae. The space below each concha is called a meatus.

Signup and view all the flashcards

What is the function of the conchae?

The nasal conchae increase surface area for airflow and help warm and humidify the air we breathe. They also direct airflow towards the olfactory epithelium for smell.

Signup and view all the flashcards

Study Notes

Systemic Anatomy for Respiratory Technology

  • The respiratory therapy program focuses on the systemic anatomy of the respiratory system.
  • This includes the nose and its various anatomical divisions.

Objectives

  • Students should be able to describe the respiratory airway divisions.
  • Students should be able to outline the anatomy of the nose.
  • Students will list the arterial supply, venous drainage, nerve supply, and lymphatics of the nose.
  • Students will define Little's area, enumerate the contributing arteries, and describe its clinical importance.

Anatomy of the Nose

  • The nose is divided into the external nose and the nasal cavity.
  • The nose is positioned between the orbits and beneath the anterior cranial fossa.
  • The external nose consists of a bony and cartilaginous framework.
  • The bony framework comprises paired nasal bones, frontal processes of the maxillae, and the nasal part of the frontal bone.
  • The supporting cartilaginous framework includes upper, lower, and accessory lateral cartilages, along with fibrofatty tissue.

Nasal Cavity

  • The nasal cavity extends from the nostrils to the posterior nasal apertures (choanae).
  • It's divided into right and left halves by the nasal septum.
  • The nasal cavity has four walls: the roof, the floor, the lateral walls, and the medial wall (nasal septum).

1- Roof

  • The anterior portion of the roof is formed by the nasal bones and the nasal part of the frontal bone.
  • The middle portion consists of the cribriform plate of the ethmoid bone.
  • The posterior portion is the body of the sphenoid bone's lower surface.

2- Floor

  • The horizontal plate of the palatine bone forms the nasal cavity's inferior limit.
  • The maxilla's palatine processes also contribute to the floor.

3- Medial Wall (Nasal Septum)

  • The nasal septum is composed of bony and cartilaginous components.
  • The supporting structures include the perpendicular plate of the ethmoid bone, the vomer bone, and septal cartilage.

4- Lateral Wall

  • The lateral walls contain three nasal conchae (superior, middle, and inferior).
  • Spaces below each concha are called meatuses (superior, middle, and inferior).

CSF Rhinorrhea

  • Fractures of the cribriform plate may result in cerebrospinal fluid (CSF) leaking into the nasal cavity.
  • The roof of the nasal cavity serves as a pathway for infection to spread from the nose into the cranial cavity.

Deviated Nasal Septum

  • A deviated nasal septum is a common cause of nasal obstruction.
  • Deviations can result from trauma, errors during development, or uneven growth.
  • Septum deviations can be surgically corrected.

Arterial Blood Supply

  • Major arteries originating from branches of the external carotid artery supply the nose.
  • These include the sphenopalatine, greater palatine, superior labial, and lateral nasal arteries.
  • The internal carotid artery's branches, the anterior and posterior ethmoid arteries, also contribute to the nasal blood supply.

Little's Area and Kiesselbach's Plexus

  • The Kiesselbach's plexus is an anastomosis of vessels in the anterior portion of the nasal septum.
  • It's a critical area for nosebleeds (epistaxis).
  • Little's area is within this plexus.
  • Arteries in this area interweave extensively, making it prone to bleeding.

Venous Drainage

  • Blood from the nose drains into the pterygoid venous plexus or directly into the cavernous sinus.

Lymphatic Drainage

  • Lymphatic drainage from the nose is to the upper deep cervical and submandibular lymph nodes.

Nerve Supply

  • Olfaction (smell) is mediated by the olfactory nerve (cranial nerve I).
  • General sensation is contributed by branches of the trigeminal nerve (cranial nerve V).
  • Parasympathetic innervation arises from the pterygopalatine ganglion.
  • Sympathetic innervation originates from the first thoracic vertebra (T1).

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Systemic Anatomy for Respiratory Technology PDF

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser