Axial Skeleton Flashcards

Questions and Answers

What is the frontal bone?

Forehead bone

What is the zygomatic bone?

Cheekbone

What is the mandible?

Lower jaw

What is the nasal bone?

Bridge of nose Signup and view all the answers

What are the palatine bones?

Posterior bones of the hard palate Signup and view all the answers

What does the parietal bone form?

Much of the lateral and superior cranium Signup and view all the answers

What is the occipital bone?

Most posterior part of the cranium Signup and view all the answers

Describe the sphenoid bone.

Single, irregular, bat-shaped bone forming part of the cranial floor Signup and view all the answers

What is the lacrimal bone?

Tiny bones bearing tear ducts Signup and view all the answers

What is the maxilla?

Anterior part of the hard palate Signup and view all the answers

What does the ethmoid bone do?

Forms superior and medial nasal conchae from its projections Signup and view all the answers

Where is the site of the mastoid process?

Temporal bone Signup and view all the answers

What is the sella turcica?

Site of the sphenoid bone Signup and view all the answers

What is the cribriform plate?

Site of the ethmoid bone Signup and view all the answers

Where is the mental foramen located?

Mandible Signup and view all the answers

Which bones are the site of styloid processes? (Select all that apply)

Ethmoid Signup and view all the answers

How many bones contain paranasal sinuses?

4 Signup and view all the answers

What are the occipital condyles?

They articulate with the atlas Signup and view all the answers

Where is the foramen magnum found?

Occipital bone Signup and view all the answers

What is the hyoid bone?

Small U-shaped bone in the neck Signup and view all the answers

What is found in the middle ear?

Temporal bone Signup and view all the answers

Which bones comprise the nasal septum? (Select all that apply)

Ethmoid Signup and view all the answers

What is the crista galli?

Upward protrusion of the ethmoid bone Signup and view all the answers

Which bones contain alveoli bearing teeth? (Select all that apply)

Maxilla Signup and view all the answers

Which bones are connected by the lambdoid suture? (Select all that apply)

Parietal Signup and view all the answers

Which bones are connected by the squamous suture? (Select all that apply)

Temporal Signup and view all the answers

Study Notes

Axial Skeleton Overview

The axial skeleton consists of bones that form the central axis of the body, including the skull, vertebral column, and rib cage.

Key Bones of the Skull

Frontal Bone: Forms the forehead region, contributing to the protection of the brain.
Zygomatic Bone: Known as the cheekbone, it provides facial structure and support.
Mandible: The lower jaw bone; the only movable bone of the skull responsible for chewing.
Nasal Bone: Composes the bridge of the nose, supporting the structure of the nasal cavity.
Palatine Bone: Forms the posterior section of the hard palate, crucial for the separation of oral and nasal cavities.
Parietal Bone: Covers much of the lateral and superior sections of the cranium, providing structural strength.
Occipital Bone: The most posterior part of the skull; contains vital openings for the spinal cord.
Sphenoid Bone: A unique, bat-shaped bone part of the cranial floor, significance includes housing the sella turcica, which holds the pituitary gland.
Lacrimal Bone: Small bones in the medial wall of each orbit that house the tear ducts.
Maxilla: Forms the upper jaw and central part of the hard palate.
Ethmoid Bone: Contributes to the nasal structure with superior and medial nasal conchae; includes the cribriform plate and crista galli for olfactory function.

Structures and Functions within the Skull

Mastoid Process: Located on the temporal bone; serves as an attachment point for neck muscles.
Alveoli: The maxilla and mandible contain these sockets for teeth.
Nasal Septum: Comprised of the vomer and ethmoid bones, it divides the nasal cavity.
Foramen Magnum: An opening in the occipital bone, allowing for the spinal cord to connect with the brain.
Condyles: On the occipital bone, these articulate with the atlas (the first cervical vertebra), allowing head movement.

Sutures Connecting Skull Bones

Lambdoid Suture: Connects the occipital bone with the parietal bones.
Squamous Suture: Joins the temporal bones with the parietal bones.

Miscellaneous

Hyoid Bone: A U-shaped bone in the neck that provides attachment for tongue muscles.
Middle Ear: Located within the temporal bone, it is essential for hearing.
Paranasal Sinuses: The sphenoid bone houses four sinuses that help with respiratory function.

Studying That Suits You

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

Description

Test your knowledge of the axial skeleton with these flashcards. Each card provides a term related to the skull and facial structure along with its definition. Perfect for students studying anatomy.