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Questions and Answers
What are the six categories of the axial skeleton?
Cranium, Face, Auditory ossicles, Hyoid, Sternum, Ribs
What are the four categories of the appendicular skeleton?
Shoulder girdle, Arm bones, Pelvic girdle, Leg bones
How many regions are there in the vertebral column, and what are they?
5 regions: Cervical, Thoracic, Lumbar, Sacral, Coccygeal
How many vertebrae are in the cervical region?
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What is the total number of ribs in the thoracic cage?
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What is the difference between true and false ribs?
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What bones make up the pelvic girdle?
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What are the primary functions of the axial skeleton?
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The vertebral column protects the ______.
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How many bones make up the sacrum?
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What is notable about cranial bones?
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Study Notes
The Skeleton
- Consists of 206 bones in the adult
- Divided into axial and appendicular skeletons
The Axial Skeleton
- Forms the longitudinal axis of the body
- Consists of 80 bones
- These include vertebrae, the skull, the face, ribs, and sternum
- Functions:
- Provides support and protection for organs
- Provides attachment for muscles
The Appendicular Skeleton
- Consists of 126 bones
The Skull
- Consists of 22 bones
- 8 cranial bones
- House the brain
- Protect and surround the brain
- 14 facial bones
- Provide shape for the face
- Form the "front porch" of the skull
- 8 cranial bones
- Some bones are air filled (or have sinuses)
- This makes the structure lighter
- Mucus membrane keeps tissues moist, cleans the air, and resonates for speech production
The Vertebral Column
- Also known as the spine
- Functions:
- Protects the spinal cord
- Supports the head and body
- Consists of 4 spinal curves:
- Cervical: develops after standing/balancing
- Thoracic: primary accommodates organs
- Lumbar: develops after standing
- Sacral: primary accommodates organs
Vertebral Column Bones
- 26 total bones
- 24 vertebrae
- 1 sacrum
- 1 coccyx
- 7 cervical vertebrae:
- Found in the neck
- 12 thoracic vertebrae:
- Found in the upper back
- Connect to the ribs
- Accommodate organs
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Description
Explore the structure and function of the human skeleton, which consists of 206 bones divided into the axial and appendicular skeletons. Delve into the specifics of the skull, vertebral column, and the roles these skeletal components play in support and protection of the body. Test your knowledge on the details of bone structure and organization.
