24 Questions
How many cranial bones are there in the human skull?
8
Which bone forms the anterior part of the cranial bones and the forehead?
Frontal bone
How many temporal bones are there in the human skull?
2
What is the function of the temporomandibular joint?
Articulation between the mandible and the temporal bone
How many facial bones are there in the human skull?
14
Which bone is the largest, strongest, and moveable face bone?
Mandible
What is the function of the mandible?
Forms the lower jaw and holds the lower teeth in place
How many zygomatic bones are there in the human skull?
2
What would be the consequence of not having a skeletal system?
We would be unable to perform movements
What are the two main components of the skeletal system?
Bones and cartilage
What is the primary function of the skeletal system?
To support and protect the soft tissues of the body
What is the term for the process of blood cell production in the bones?
Hematopoiesis
How many parts does the skeletal system have?
Two
What is the final bone of the axial skeleton?
Hyoid bone
What are the two main parts of the skull?
Cranial bones and facial bones
What is the name of the large hole through which the spinal cord exits the skull?
Foramen magnum
What is the function of the intervertebral discs in the vertebral column?
To act as firm cartilage pads between adjacent vertebra
How many pairs of ribs are there in the thoracic cage?
12 pairs
What is the name of the first vertebra in the cervical region?
Atlas vertebra
What is the function of the vertebral column?
To enclose and protect the spinal cord and serve as a point of attachment for ribs and muscles of the back
What is the name of the small triangle of cartilage at the inferior end of the sternum?
Xiphoid process
How many vertebrae are there in the sacral region?
5
What is the name of the opening between the vertebrae through which nerves pass?
Intervertebral foramina
What is the function of the false ribs?
To form a protective cover for the kidneys
Study Notes
Skeletal System
- The skeletal system consists of two types of connective tissue: bones and cartilage
- It provides a framework for the body, allowing for movement, protection of organs, and storage of mineral salts and fat
- The skeletal system performs several functions: supporting and protecting soft tissues, storing mineral salts and fat, and enabling blood cell production
Axial Skeleton
- Composed of the skull, vertebral column, thoracic cage, and hyoid bone
- Axial skeleton provides a central axis for the body and protects vital organs
Skull
- Composed of 8 cranial bones and 14 facial bones
- Cranial bones:
- Frontal bone: forms the anterior part of the cranial bones and the forehead
- Parietal bones (2): form the upper lateral wall of the cranial bones
- Temporal bones (2): form the lower lateral wall of the cranial bones and contain the inner and middle ear
- Occipital bone: forms the bottom (ventral) portion of the cranium
- Sphenoid bone: located in the middle and extending up the sides
- Ethmoid bone: fills in the remaining square of the floor near the front of the cranial bones
- Facial bones:
- Mandible: forms the lower jaw and holds the lower teeth in place
- Maxillary bones (2): form the upper portion of the face, between the eyes and the upper teeth
- Zygomatic bones (2): lie lateral to the maxilla and form the upper portion of the cheek
- Nasal bones (2): form the “bridge” of the nose between the eyes
- Lacrimal bones (2)
- Palatine bones (2)
- Vomer
Vertebral Column
- Composed of cervical (7), thoracic (12), lumbar (5), sacral (5 fused), and coccyx (4 fused) vertebrae
- Vertebrae consist of a large oval body and intervertebral discs that act as cartilage pads between adjacent vertebrae
- The vertebral column encloses and protects the spinal cord, supports the head, and serves as a point of attachment for ribs and muscles of the back
- Intervertebral foramina allow nerves to pass through and connect the spinal cord to various parts of the body
Thoracic Cage
- Composed of ribs, costal cartilage, and sternum (breastbone)
- Ribs are 12 pairs, with the first seven pairs attaching to the sternum directly and the remaining five pairs not attaching directly
- The liver and spleen lie medial to the ribs, and the final two pairs of ribs form a protective cover for the kidneys
This quiz covers the basics of the skeletal system, including its components, functions, and structures. Learn about bones, cartilage, and joints.
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