The Skeletal System Flashcards
(62 cards)
What are the 3 purposes of the skull
Protection
Structure
Connection
What 5 things does the skull protect?
The brain
The brainstem
The cerebellum
The eye orbits
The nerves and vessels supplying the brain, facial muscles and skin
How does the skull provide structure?
It anchors the muscles of the face and scalp
What is another name for the skull?
The cranium
How does the skull provide connection?
The cranium has an opening at its base where the spinal cord connects to the brain
What is the skull?
A single structure forming a case around the brain
What is the mandible?
The lower jaw
The mandible is the only moveable bone in the skull true/false
True
What does the mandible support?
The bottom row of teeth
What does the mandible protect?
The faces organs
What joint does the mandible form with the temporal bone?
Temporomandibular joint
What is the maxilla?
A major bone in the face that forms the upper jaw, roof of the mouth and parts of the eye socket and nose
How many vertebrae does the cervical spine have?
7
What is the first cervical vertebrae known as?
The atlas
What is the second cervical vertebrae known as?
The axis
What are the 5 functions of the cervical spine?
Support the head
Protects the spinal cord
Enabling head and neck movement
Supports blood flow to the brain
Cushions loads to the heat and neck
What are the 3 main functions of the atlas?
Enabling head and neck movement
Conducting the cervical cord and vertebral arteries
Providing muscular attachments
What directions does the atlas allow the head to move?
Allows for flexion, extension, rotation and lateral bending.
What are the 5 main functions of the axis?
Allowing for head rotation
Providing Support
Allowing for Mobility
Acts as a conduit
Provides attachment points
What directions does the axis allow the head to move?
Allows the head to rotate
How many vertebrae does the thoracic spine have?
12
What are the 6 main functions of the thoracic spine?
Protects the spinal cord
Supports the upper body
Attaches the ribs to the spine
Allows for movement
Distributes weight and absorbs shock
Feeds into nerves in the chest, arm and hand
What are the 6 main functions of the lumbar spine?
Supports the upper body
Moving the body
Protecting the spinal cord
Controls leg movement
Maintaining posture
Protecting abdominal organs
How many vertebrae does the lumbar spine have?
5