Science B4 EOY test

Question 1

What are the four functions of the circulatory system?

Answer 1

Transportation, protection, temperature, and fluid balance.

Question 2

Your body can send messages to the brain at the speed of

Answer 2

200m/h

Question 3

Peripheral NS

Answer 3

nerves outside of the brain and spinal cord

Question 4

joint

Answer 4

where two or more bones meet

Question 5

Autonomic

Answer 5

automatically: without thinking ex: heartbeat, breathing

Question 6

Gliding Joint

Answer 6

bones glide over each other; wrist and ankle

Question 7

Pivot Joint

Answer 7

bones rotate around each other; neck and elbow

Question 8

Frontal lobe

Answer 8

It is associated with parts of speech, planning, reasoning, problem-solving and movements

Question 9

Hinge Joint

Answer 9

back and forth; knees and elbows

Question 10

How many chambers are in the heart?

Answer 10

Four: left and right atrium, left and right ventricle.

Question 11

3 types of muscles

Answer 11

skeletal, smooth, cardiac

Question 12

What does the heart do?

Answer 12

Muscular organ that pumps blood.

Question 13

ALS

Answer 13

degeneration of motor neurons

Question 14

Voluntary

Answer 14

we control

Question 15

longest bone in body

Answer 15

femur

Question 16

Central NS

Answer 16

brain and spinal cord

Question 17

Longest neuron in the body is

Answer 17

3ft from spine to big toe

Question 18

Motor Neuron cells

Answer 18

carry messages away from the brain and spine to rest of the body

Question 19

Cerebrum

Answer 19

Your cerebrum is the largest part of your brain and handles conscious thoughts and actions

Question 20

Ball and Socket Joint rotational;

Answer 20

shoulder and hips

Question 21

Osteoporois

Answer 21

bones lose density causing them to become weak

Question 22

Parietal lobe

Answer 22

Help in movements, the perception of stimuli and orientation

Question 23

Four types of tissues

Answer 23

connective, nervous, muscle, epithelial

Question 24

Muscular Dystrophy

Answer 24

inherited muscle disorder

Question 25

How does the muscular system interact with the other systems

Answer 25

heart is a muscle. muscles move bones

Question 26

What do organelles do

Answer 26

specialized structures in a cell that perform a specific function

Question 27

Cerebellum

Answer 27

main functions are motor coordination, posture maintenance, and balance. (voluntary functions

Question 28

Glial nerve cells

Answer 28

surround neurons and provide support

Question 29

ADHD neurodevelopment

Answer 29

disorder that makes it hard to focus

Question 30

Involuntary

Answer 30

move on their own

Question 31

What is homeostasis?

Answer 31

The body's attempt to maintain a constant internal environment

Question 32

What is chemical digestion?

Answer 32

Chemical change through enzymes

Question 33

What does the skin do in the immune system?

Answer 33

Prevents pathogens from entering the body

Question 34

What do white blood cells do?

Answer 34

Fight germs

Question 35

Order of structures that air travels to the lungs

Answer 35

Nasal and oral cavity; pharynx; larynx; trachea; left and right bronchi; lungs

Question 36

What does mucus do?

Answer 36

Traps germs

Question 37

What do proteins do in digestion?

Answer 37

Speed up chemical reactions by splitting molecules that can be absorbed in the bloodstream

Question 38

What is asthma?

Answer 38

Lung disease that inflames airways making it hard to breathe

Question 39

What is mechanical digestion?

Answer 39

Physical change in mouth, peristalsis, and esophagus

Question 40

What is the main function of the immune system?

Answer 40

Defend the body against infection

Question 41

What do kidneys do?

Answer 41

Filter blood

Question 42

What is the lymphatic system?

Answer 42

Network of tiny vessels that allow immune cells to travel around the body

Question 43

What are the 3 steps to building immunity?

Answer 43

Detect antigen; white blood cells respond; antibodies made for future

Question 44

What are the 6 functions of the digestive system?

Answer 44

Breaks down food in mouth; peristalsis to stomach; breakdown in stomach; small intestine digestion; water absorbed in large intestine; waste exits body

Question 45

What are 3 ways the body maintains homeostasis?

Answer 45

Remove waste; balance water level; control blood pressure

Question 46

What are the 5 excretory organs in the body?

Answer 46

Kidneys; Skin; Large intestine; Liver; Lungs

Question 47

What are the 4 steps of gas exchange?

Answer 47

Air enters lungs; O₂ enters blood & CO₂ exits; oxygen delivered & CO₂ removed from cells; repeat

Question 48

What is the path of urination through the body?

Answer 48

Kidneys → Ureters → Bladder → Sphincter muscle → Urethra

Question 49

What are the 6 functions of the respiratory system?

Answer 49

Absorb oxygen; remove CO₂; make sound; add moisture; warm air; clean air

Question 50

What is the process of waste removal in the kidneys?

Answer 50

Waste enters tubule; useful substances return to blood; rest becomes urine and goes to bladder