Podcast
Questions and Answers
Which bone is not considered a facial bone?
Which bone is not considered a facial bone?
- Maxilla
- Sphenoid bone (correct)
- Nasal bone
- Mandible
How many pairs of bones are there in the facial bones category?
How many pairs of bones are there in the facial bones category?
- 7 pairs
- 8 pairs
- 5 pairs
- 6 pairs (correct)
Which of the following pairs of bones contribute to the structure of the nasal cavity?
Which of the following pairs of bones contribute to the structure of the nasal cavity?
- Nasal bones and Maxillae
- Vomer and Mandible
- Lacrimal bones and Zygomatic bones
- Palatine bones and Inferior nasal conchae (correct)
What is the function of the maxillae in the skull?
What is the function of the maxillae in the skull?
Which bone is single and not paired in the facial skeleton?
Which bone is single and not paired in the facial skeleton?
What occurs after the formation of a hematoma in the bone healing process?
What occurs after the formation of a hematoma in the bone healing process?
Which of the following best describes the axial skeleton?
Which of the following best describes the axial skeleton?
What component is primarily formed during the bony callus stage?
What component is primarily formed during the bony callus stage?
Which step of bone healing follows bony callus formation?
Which step of bone healing follows bony callus formation?
What is the main function of the internal callus during fracture healing?
What is the main function of the internal callus during fracture healing?
What is one of the primary functions of the skeletal system?
What is one of the primary functions of the skeletal system?
How many bones are present in the adult human skeleton?
How many bones are present in the adult human skeleton?
Which type of bone tissue is dense and appears smooth?
Which type of bone tissue is dense and appears smooth?
What are the two subdivisions of the skeleton?
What are the two subdivisions of the skeleton?
Which of the following is NOT a function of the skeletal system?
Which of the following is NOT a function of the skeletal system?
What tissue is primarily responsible for the attachment of muscles to bones?
What tissue is primarily responsible for the attachment of muscles to bones?
What type of bone consists of small needle-like pieces and many open spaces?
What type of bone consists of small needle-like pieces and many open spaces?
Which function of the skeletal system involves the storage of triglycerides?
Which function of the skeletal system involves the storage of triglycerides?
At what age is the skull approximately three-fourths the size of an adult skull?
At what age is the skull approximately three-fourths the size of an adult skull?
What happens to the face shape during the ages of 6 to 11?
What happens to the face shape during the ages of 6 to 11?
What is one function of the paranasal sinuses?
What is one function of the paranasal sinuses?
Which bone does not articulate with any other bone?
Which bone does not articulate with any other bone?
How many vertebrae are in the cervical region?
How many vertebrae are in the cervical region?
What skeletal change occurs in females during puberty?
What skeletal change occurs in females during puberty?
The vertebral column is made up of how many total bones?
The vertebral column is made up of how many total bones?
Which of the following structures is formed by the fusion of five vertebrae?
Which of the following structures is formed by the fusion of five vertebrae?
What is the total number of bones in the appendicular skeleton?
What is the total number of bones in the appendicular skeleton?
Which of the following is part of the pectoral girdle?
Which of the following is part of the pectoral girdle?
Which group of bones is found in the thoracic cage?
Which group of bones is found in the thoracic cage?
Which of the following bones is NOT found in the upper limb?
Which of the following bones is NOT found in the upper limb?
What type of bones are the phalanges classified as?
What type of bones are the phalanges classified as?
Which bone is considered part of the axial skeleton?
Which bone is considered part of the axial skeleton?
What is the function of the pelvic girdle?
What is the function of the pelvic girdle?
How many phalanges are in each hand?
How many phalanges are in each hand?
Study Notes
Skeletal System Components
- Consists of bones, cartilage, tendons and ligaments
- Two subdivisions: Axial Skeleton and Appendicular Skeleton
Axial Skeleton
- Forms the longitudinal axis of the body
- Three parts: skull, vertebral column, bony thorax
Functions of the Skeletal System
- Supports the body
- Enables movement
- Protects internal organs
- Produces blood cells
- Serves as a storage site for minerals and lipids
Bones
- The human skeleton has 206 bones
- Two types of bone tissue: compact bone and spongy bone.
- Compact bone: Dense and smooth, homogeneous
- Spongy bone: Contains small, needle-like pieces of bone with many open spaces
- Flat bones: layer of spongy bone sandwiched between two thin layers of compact bone.
Bone Fracture Repair
- Hematoma formation
- Fibrocartilage callus formation
- Bony callus formation
- Bone remodeling
Common Types of Fractures
- Closed (simple): The broken bone doesn't pierce the skin
- Open (compound): The bone breaks through skin
- Comminuted: Bone is splintered or crushed into more than two pieces
- Greenstick: Bone is partially broken, like a twig
- Spiral: Bone is broken in a spiral pattern
- Stress: Small fracture caused by overuse
Skull
- 22 bones
- Cranium: 8 bones
- Facial bones : 14 bones
Facial Bones
- 2 Maxillae
- 2 Palatine bones
- 2 Lacrimal bones
- 2 Zygomatic bones
- 2 Nasal bones
- Vomer bone
- 2 Inferior nasal conchae
- Mandible
Paranasal Sinuses
- Hollow portions of bones surrounding the nasal cavity
- Lighten the skull
- Amplify sounds made as we speak
Hyoid Bone
- The only bone that does not articulate with another bone
- Serves as a movable base for the tongue
- Aids in swallowing and speech
Vertebral Column
- Provides axial support
- Extends from skull to pelvis
- 26 Bones separated by intervertebral discs
- 7 Cervical vertebrae in the neck
- 12 Thoracic vertebrae in the chest region
- 5 Lumbar vertebrae in the lower back
- Sacrum (formed by fusion of 5 vertebrae)
- Coccyx (formed by fusion of 3-5 vertebrae)
Appendicular Skeleton
- Composed of 126 bones
- Limbs (appendages)
- Pectoral girdle
- Pelvic girdle
Developmental Aspects of the Skeleton
- Size of cranium in relationship to body
- At 2 years old—skull is three-fourths the size of adult skull
- At 8 or 9 years old—skull is near adult in size and proportion
- Between ages 6 and 11, the face grows out from the skull
Skeletal Changes Caused by Puberty
- Female pelvis broadens
- Entire male skeleton becomes more robust
The Thoracic Cage
- The bony thorax
- Contains 12 pairs of ribs
- Sternum: the breastbone
The Pectoral Girdle
- Formed by two bones on each side
- Clavicle: collarbone
- Scapula: shoulder blade
The Pelvic Girdle
- Formed from a pair of hip bones (coxal bones)
- Protects the organs of the pelvis
The Upper Limb
- Arm: Humerus (upper arm bone)
- Forearm: Radius (thumb side) and Ulna (pinky side)
- Hand: 8 Carpals (wrist bones), 5 Metacarpals (palm bones), 14 Phalanges (finger bones)
The Lower Limb
- Thigh: Femur (thigh bone)
- Knee: Patella (kneecap)
- Leg: Tibia (shinbone) and Fibula (smaller bone)
- Foot: 7 Tarsals (ankle bones), 5 Metatarsals (foot bones), 14 Phalanges (toe bones)
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the components and functions of the skeletal system, including the Axial and Appendicular skeletons. Test your knowledge on bone structures, fractures, and the repair process. Understand how the skeletal system supports and protects the body.
