Skeleton, Joints & Muscles

Question 1

What is a synovial joint cavity filled with?

Answer 1

Synovial fluid

Question 2

3 bones in the skull

Answer 2

Cranium, Mandible and Maxilla

Question 3

2 bones in the shoulder

Answer 3

clavicle and scapula

Question 4

3 bones in the arm

Answer 4

humerus, radius and ulna

Question 5

3 bones in the hand

Answer 5

Carpals, Metacarpals and Phalanges

Question 6

2 bones in the chest

Answer 6

Sternum and Ribs

Question 7

3 bones in leg

Answer 7

Femur, Tibia and Fibula

Question 8

3 bones in foot

Answer 8

Tarsals, Metatarsals and Phalanges.

Question 9

What are the five reasons for the skeleton

Answer 9

Movement, shape, support, blood cell production and protection

Question 10

What tissue is found inside bones

Answer 10

Bone marrow

Question 11

Where in the skeleton can the hinge joint be found?

Answer 11

Fingers and toes

Question 12

What is am example of the ball and socket joint

Answer 12

Hip and shoulder joints

Question 13

Example of pivot joint

Answer 13

Neck

Question 14

What is the role of synovial fluid

Answer 14

To reduce friction between the articular cartilage of synovial joints during movement

Question 15

How does a fibrous joint work and where can it be found in the human skeleton?

Answer 15

Fibrous joints cannot move, an example is the cranium (skull)

Question 16

How do muscles cause movement?

Answer 16

They contract

Question 17

Muscles work together to create movement throughout the skeleton, what is this called?

Answer 17

They work in antagonistic pairs to create movement

Question 18

What do flexor muscles do?

Answer 18

They bend a joint

Question 19

What do extensor muscles do?

Answer 19

Straighten a joint

Question 20

What is the purpose of tendons

Answer 20

They connect muscles to bones therefore transmitting he force of the muscle to the bone

Question 21

True or false: your heart rate increases during and after exercise

Answer 21

True

Question 22

Why does your heart rate increase after exercise

Answer 22

When doing physical activity your muscles will require more nutrients and eliminate waste products at the same time. The heart must then beat at a quicker rate to pump the blood through the body quicker meeting those demands.

Question 23

Why does your breathing become heavier during exercise?

Answer 23

Your muscles are working significantly harder during physical activity and therefore their demand for oxygen increases. This happens because oxygen is needed to burn calories more quickly, with a faster breathing rate more oxygen is picked up at the lungs to deliver to the muscles.

Question 24

Why does exercise make your body temperature rise?

Answer 24

More than 70 percent of the energy that powers your muscles is lost as heat, causing your body temperature to rise during exercise. To keep your body temperature from rising too high, your heart pumps the heat in your blood from your muscles to your skin, you sweat and it evaporates to cools your body

Question 25

What is an independent variable

Answer 25

An independent variable is not changed by other factors or products of the experiment

Question 26

What is a dependent variable

Answer 26

A variable that relies and changes based on other parts of an experiment.

Question 27

What is a control variable

Answer 27

What stays the same