Nervous, Skeletal, & Muscular Unit

Question 1

What is the most important organ of the nervous system and why is it so important?

Answer 1

The brain because it sends and receives signals allowing us to respond appropriate to our surroundings.

Question 2

How do messages/signals/information get to the brain?

Answer 2

Neurons release chemicals throughout the body and it makes its way to and from the brain.

Question 3

What are the 5 functions of the skeletal system?

Answer 3

1. Gives us shape and structure
2. Stores calcium to make bones stronger
3. Allows us to move
4. Bone marrow produces red blood cells
5. Provides protection of major organs

Question 4

What are the 4 types of joints?

Answer 4

1. Hinge
2. Pivot
3. Gliding
4. Ball-and-socket

Question 5

What are two examples of hinge joints in the body?

Answer 5

1. Elbow

2. Knee

Question 6

What is an example of a pivot joint in the body?

Answer 6

Neck

Question 7

What are two examples of gliding joints in the body?

Answer 7

1. Wrists

2. Ankles

Question 8

What are two examples of ball-and-socket joints in the body?

Answer 8

1. Shoulder

2. Hip

Question 9

What are the two types of muscles?

Answer 9

1. Voluntary (think about moving)

2. Involuntary (do not think about moving)

Question 10

What are the three muscle tissues?

Answer 10

1. Skeletal
2. Smooth
3. Cardiac

Question 11

What are two major muscle pairs in arms?

Answer 11

1. Biceps

2. Triceps

Question 12

What is a major muscle pair of the legs?

Answer 12

Quadriceps & Hamstrings

Question 13

When your arm is straight does the Tricep contract or relax?

Answer 13

When your arm is straight the Tricep contracts

Question 14

When your arm is straight does the Bicep contract or relax?

Answer 14

When your arm is straight the Bicep relaxes

Question 15

When your arm is bent does your Bicep contract or relax?

Answer 15

When your arm is bent your Bicep contracts.

Question 16

When your arm is bent does the Tricep contract or relax?

Answer 16

When the arm is bent the Tricep relaxes

Question 17

When your leg is straight does the Quadricep contract or relax?

Answer 17

When your leg is straight the Quadricep contracts

Question 18

When your leg is straight does the Hamstring contract or relax?

Answer 18

When your leg is straight the Hamstring relaxes

Question 19

When your leg is bent does the Hamstring contract or relax?

Answer 19

When your leg is bent the Hamstring contracts

Question 20

When your leg is bent does the Quadricep contract or relax?

Answer 20

When your leg is bent the Quadricep relaxes

Question 21

What are the cells of the nervous system called?

Answer 21

Neurons