Question

skeletal system
understanding main ideas
answer the following on a separate sheet of paper.

1. name the five functions of the skeleton.
2. what lifestyle choices help keep bones healthy and strong?
3. what do movable joints enable the body to do? what are the four types of movable joints?

label the numbered parts of the femur below in the spaces provided.
4.
5.
6.
7.
building vocabulary
fill in the blank to complete each statement.

1. a place in the body where two bones come together is a(n) ______.
2. ______ is a condition in which the body’s bones become weak and break easily.
3. a(n) ______ is one of the 26 small bones that make up your backbone.
4. the tip of your nose is able to move from side to side because it is made up of a connective tissue that is more flexible than bone. this type of tissue is called ______.
5. a(n) ______ is the strong connective tissue that holds the bones together in a movable joint.

Explanation:

The questions are about the skeletal system, including functions of the skeleton, bone health, movable joints, labeling parts of the femur, and skeletal - related vocabulary. This falls under the subfield of Biology in Natural Science as it deals with the structure and function of the human skeletal system, which is a key topic in biological studies of the human body.

For question 1: The five functions of the skeleton are support (provides a framework for the body), protection (protects internal organs like the skull protecting the brain), movement (acts as levers for muscles to pull on), storage (stores minerals like calcium and phosphorus), and blood cell production (bone marrow produces red and white blood cells).

For question 2: Lifestyle choices that help keep bones healthy and strong include getting enough calcium (from dairy products, leafy greens) and vitamin D (from sunlight, fortified foods) for bone growth and maintenance, regular weight - bearing exercise (like walking, running) which stimulates bone growth, avoiding smoking (smoking can interfere with bone health), and limiting alcohol intake (excessive alcohol can weaken bones).

For question 3: Movable joints enable the body to move in different ways (like bending, rotating, extending). The four types of movable joints are hinge joints (e.g., knee, elbow), ball - and - socket joints (e.g., hip, shoulder), pivot joints (e.g., between the radius/ulna and humerus), and gliding joints (e.g., in the wrist).

For question 4 - 7 (labeling the femur):

• 4: Likely the ligament (connective tissue that supports the joint)
• 5: Likely the cartilage (smooth tissue covering the ends of bones)
• 6: Likely the spongy bone (porous bone tissue inside the femur)
• 7: Likely the marrow cavity (where bone marrow is located)

For question 8: A place in the body where two bones come together is a joint.

For question 9: Osteoporosis is a condition in which the body’s bones become weak and break easily.

For question 10: A vertebra is one of the 26 small bones that make up your backbone.

For question 11: The tip of your nose is made of cartilage, a connective tissue more flexible than bone.

For question 12: A ligament is the strong connective tissue that holds the bones together in a movable joint. (Note: For movable joints, tendons connect muscles to bones and ligaments connect bones to bones. So the correct term here is ligament? Wait, no. Wait, in a movable joint, the tissue that holds bones together is a ligament. But if it's the tissue that connects muscle to bone, it's a tendon. So for holding bones together in a movable joint, it's a ligament. But wait, another thought: maybe it's a tendon? No, ligaments connect bone to bone. So the answer should be ligament. Wait, no, maybe I made a mistake. Wait, the question says "holds the bones together in a movable joint". So the answer is ligament. But let's check again. The strong connective tissue that holds bones together in a joint is a ligament. Tendons connect muscle to bone. So question 12 answer is ligament.

Answer:

1. Support, Protection, Movement, Storage, Blood Cell Production
2. Adequate calcium/vitamin D intake, weight - bearing exercise, no smoking, limited alcohol
3. Enable movement; Hinge, Ball - and - Socket, Pivot, Gliding
4. Ligament (example)
5. Cartilage (example)
6. Spongy Bone (example)
7. Marrow Cavity (example)
8. Joint
9. Osteoporosis
10. Vertebra
11. Cartilage
12. Ligament