1.
What is a joint?
Correct Answer
B. Where two bones meet and move
Explanation
A joint is the point where two bones come together and allow for movement. It is the connection between the bones that enables them to articulate and perform various motions. The joint provides stability and flexibility to the skeletal system, allowing for smooth and coordinated movement of the body.
2.
Which is not a type of joint in our skeleton?
Correct Answer
D. Swinging
Explanation
Swinging is not a type of joint in our skeleton. The other options, hinge, ball-and-socket, and pivot, are all types of joints that exist in our skeletal system.
3.
Which two joints move the same way in our skeleton?
Correct Answer
B. Knee joints and elbow joints
Explanation
The knee joints and elbow joints move the same way in our skeleton because they are both hinge joints. Hinge joints allow movement in only one direction, similar to a door hinge. Both the knee and elbow joints allow flexion and extension, which means they can bend and straighten. This similarity in movement makes them the correct answer.
4.
What tasks would be difficult if your knee joints did not work?
Correct Answer
A. Running
Explanation
If your knee joints did not work, running would be difficult because the knees play a crucial role in the running motion. They help absorb shock and provide stability, allowing for efficient movement. Without functioning knee joints, the impact and stress on other parts of the body, such as the hips and ankles, would increase, making running challenging and potentially painful.
5.
Which is an example of an immovable joint? (doesn't move)
Correct Answer
D. Skull
Explanation
The skull is an example of an immovable joint because the bones of the skull are fused together, forming a solid structure that does not allow for movement. Unlike the shoulder, elbow, and ankle joints, which are all movable joints that allow for various degrees of movement, the bones of the skull are fixed in place, providing stability and protection for the brain.
6.
Where is the ball-and-socket joint located?
Correct Answer
A. Shoulder
Explanation
The ball-and-socket joint is located in the shoulder. This joint allows for a wide range of motion and allows the arm to move in multiple directions, including rotating and swinging. The ball-shaped head of the upper arm bone fits into the socket of the shoulder blade, creating the ball-and-socket joint. This joint is responsible for the movement and stability of the shoulder.
7.
Which of these body parts uses a pivot joint?
Correct Answer
B. Neck
Explanation
The neck uses a pivot joint. A pivot joint allows rotational movement around a single axis, allowing the head to rotate from side to side. The spine is made up of several vertebrae and does not use a pivot joint. The finger and shoulder joints have different types of joints that allow for different types of movement.
8.
Where might you find a gliding joint?
Correct Answer
B. Spine
Explanation
A gliding joint is a type of joint that allows bones to glide past one another. The spine is made up of a series of small bones called vertebrae, and between each vertebra is a gliding joint. These joints allow for small movements and flexibility in the spine, such as bending and twisting. Therefore, it is in the spine where you would find a gliding joint.
9.
What connects bones to each other at the joints?
Correct Answer
A. Ligaments
Explanation
The correct answer is ligaments. Ligaments are strong bands of connective tissue that connect bones to each other at the joints. They provide stability and support to the joints, allowing for movement while preventing excessive or abnormal movements that could cause injury. Ligaments are flexible but also have a certain degree of elasticity, which helps to maintain the integrity of the joints during various activities.
10.
What protects bones from being worn down?
Correct Answer
B. Cartilage
Explanation
Cartilage protects bones from being worn down. It acts as a cushion between bones, reducing friction and absorbing shock during movement. Unlike bones, cartilage is flexible and can withstand pressure, preventing wear and tear. It also provides a smooth surface for joints to move smoothly, allowing for pain-free movement. Ligaments connect bones to other bones, while joints are the areas where two bones meet. While both ligaments and joints play important roles in bone stability and movement, they do not directly protect bones from being worn down.
11.
What is a disc?
Correct Answer
C. A pad of cartilage in your spine
Explanation
A disc refers to a pad of cartilage in your spine. The spinal discs are located between the vertebrae and act as shock absorbers, providing cushioning and flexibility to the spine. They help to maintain proper spacing and alignment of the vertebrae, allowing for smooth movement and preventing bone-on-bone contact.