Questions and Answers
What is the lower jawbone called?
What bones protect the organs in the chest area?
Ribs
Name the flat bone that is in the center of the chest.
Sternum
What is the name of the spine section that consists of seven vertebrae in the neck region?
Signup and view all the answers
What is the region of the spine that consists of twelve vertebrae located in the upper and mid-back?
Signup and view all the answers
What part of the spine consists of five vertebrae located in the lower back?
Signup and view all the answers
What is the name of the triangular bone located at the base of the spine?
Signup and view all the answers
What is the name of the small, three to five vertebrae at the very end of the spine?
Signup and view all the answers
What is the name of the bone that is commonly known as the collarbone?
Signup and view all the answers
What is the name of the shoulder blade bone?
Signup and view all the answers
What is the long bone located in the upper arm?
Signup and view all the answers
What is the name of the bone located on the inner side of the forearm?
Signup and view all the answers
What is the name of the bone on the outer side of the forearm?
Signup and view all the answers
What is the general name for the bones in the wrist?
Signup and view all the answers
What are the bones in the hand called that connect the wrist to the fingers?
Signup and view all the answers
What are the bones in the fingers called?
Signup and view all the answers
What is the longest bone in the human body?
Signup and view all the answers
What is the name of the kneecap bone?
Signup and view all the answers
What is the name of the bone located in the lower leg, on the inner side?
Signup and view all the answers
What is the name of the smaller bone located in the lower leg, on the outer side?
Signup and view all the answers
What is the general name for the bones in the ankle?
Signup and view all the answers
What is the name of the heel bone?
Signup and view all the answers
What are the bones in the foot that are between the tarsal bones and the toes called?
Signup and view all the answers
What are the bones in the toes called?
Signup and view all the answers
What is the part of the skeleton that supports the vertebral column and encases the organs in the pelvic area?
Signup and view all the answers
What is the upper part of the skull that encases the brain?
Signup and view all the answers
Study Notes
Skeletal System Components
- Mandible: The lower jawbone; the only movable bone of the skull.
- Ribs: Flat bones forming the rib cage; protects heart and lungs; typically 12 pairs in humans.
- Sternum: Also known as the breastbone; central part of the rib cage; connects with ribs via cartilage.
Vertebrae Categories
- Cervical Spine: Comprises 7 vertebrae (C1-C7); supports the skull and allows for head movement.
- Thoracic Spine: Contains 12 vertebrae (T1-T12); connects to the ribs; provides stability to the upper body.
- Lumbar Spine: Consists of 5 vertebrae (L1-L5); located in the lower back; supports weight-bearing activities.
Pelvis and Lower Spine
- Sacrum: Triangular bone at the base of the spine; made of five fused vertebrae; connects to the pelvis.
- Coccyx: Also known as the tailbone; made of 3-5 fused vertebrae; provides attachment for ligaments and muscles.
Upper Limb Bones
- Clavicle: Also called the collarbone; connects arm to the body; acts as a strut to stabilize shoulder.
- Scapula: Also known as the shoulder blade; connects humerus to the clavicle; allows for arm movement.
- Humerus: The long bone of the upper arm; extends from shoulder to elbow.
- Ulna: One of the two forearm bones; on the inner side when in anatomical position; slightly longer than the radius.
- Radius: The other forearm bone; on the outer side; enables wrist rotation.
Hand Structure
- Carpal Bones: Eight small bones forming the wrist; include the scaphoid and lunate.
- Metacarpals: Five bones forming the middle part of the hand; numbered one through five starting from the thumb.
- Phalanges of the Hand: The finger bones; each finger has three phalanges except for the thumb, which has two.
Lower Limb Anatomy
- Femur: The longest bone in the body; extends from hip to knee; crucial for walking and running.
- Patella: Also known as the kneecap; protects the knee joint; enhances leverage of the thigh muscles.
- Tibia: The larger bone of the lower leg; supports weight; connects knee to ankle.
- Fibula: The smaller bone of the lower leg; located parallel to the tibia; provides stability.
Foot Structure
- Tarsal Bones: Seven bones of the ankle; includes the calcaneus and talus.
- Calcaneus: The heel bone; largest of the tarsal bones; supports body weight while standing.
- Metatarsals: Five long bones in the foot; connect tarsals to toes.
- Phalanges of the Foot: The toe bones; similar to hand phalanges, with two in the big toe and three in others.
Skull Structure
- Pelvis: A basin-shaped structure; supports the weight of the upper body and protects pelvic organs.
- Cranium: The protective skull casing for the brain; composed of several fused bones; crucial for protecting the brain from injury.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of the human skeletal system and its components. This quiz covers the major bones, vertebrae categories, and their functions. Perfect for students and anyone interested in anatomy.
