Organisations

Question 1

What is a tissue?

Answer 1

A group of similar cells working together

Question 2

What is an organ?

Answer 2

A group of different tissues working together

Question 3

What is an organ system?

Answer 3

A group of organs working together

Question 4

What is an advantage of alveoli?

Answer 4

Large surface area for gas exchange to take place.

Question 5

What are the top chambers in the heart?

Answer 5

Multiple: Atria
Single: Atrium

Question 6

What are the bottom chambers in the heart?

Answer 6

Ventricles

Question 7

What do valves do in the heart?

Answer 7

Stop blood flowing backwards

Question 8

1. Where has blood from the pulmonary vein come from?
2. Is is oxygenated or deoxygenated?

Answer 8

1. Came from lungs
2. Oxygenated

Question 9

1. Where has blood from the vena cava come from?
2. Is is oxygenated or deoxygenated?

Answer 9

1. From the body
2. Deoxygenated

Question 10

Pulmonary artery pushes 1……. blood to the 2…….

Answer 10

1. Deoxygenated
2. To the lungs

Question 11

The aorta pushes 1…… blood to the 2……..

Answer 11

1. Oxygenated
2. To the body

Question 12

1. Pacemakers job?
2. Where are they found?

Answer 12

1. Small electrical impulses which control resting heart rate.
2. Found in the right atrium wall.

Question 13

What does the term artery refer to?

Answer 13

Carries blood away from the heart
(A-away)

Question 14

What does the term vein refer to?

Answer 14

Carries blood to the heart (veIN)

Question 15

What 3 types of blood vessels

Answer 15

Arteries, Capillaries and Veins

Question 16

Structure of Arteries

Answer 16

Thick muscle and elastic layers because blood pressure is high

Question 17

Structure of Capillaries

Answer 17

Thin, permeable walls to allow substances to diffuse in and out easily

Question 18

Structure of Veins

Answer 18

Thin walls as blood pressure is low.
Has valves to stop blood flowing backwards.

Question 19

Rate of blood flow equation

Answer 19

Volume of blood/ take taken

Question 20

How is the heart specialised to do its job?

Answer 20

-Thick walls
-Large volume
-Strong muscles

Question 21

Which organ system is the heart part of?

Answer 21

Circulatory system

Question 22

Blood:

What are 4 blood components?

Answer 22

Red blood cells
White blood cells
Platelets
Plasma

Question 23

Function of red blood cells

Answer 23

Carry oxygen around the body

Question 24

Function of white blood cells

Answer 24

Defend against infection

Question 25

Function of platelets

Answer 25

Help blood clot at a wound

Question 26

Function of plasma

Answer 26

Carries everything in blood (Including Rbc, Wbc and platelets)

Question 27

5 treatments of cardiovascular disease

Answer 27

-Stents
-Statins
-Heart transplant
-Artificial hearts
-Replacement heart valves

Question 28

What is a stents?

What is an advantage and disadvantage?

Answer 28

A tube we can put in an artery to keep blood flowing

Advantages:
-Last a long time

Disadvantage:
-Surgery has risks

Question 29

What is a statin?

What is an advantage and disadvantages?

Answer 29

Medication which alters the balance of cholesterol

Advantage:
-reducechance of having a heart attack

Disadvantages:
-Need to be taken long-term

Question 30

What is an advantage and disadvantage of replacement heart valves?

Answer 30

Advantage:
- Can treat severe valve damage

Disadvantage:
-Risk of surgery

Question 31

What is an advantage and disadvantage of artificial hearts?

Answer 31

Advantage:
- Can be used while waiting for a donor

Disadvantage:
-Only temporary

Question 32

What is an advantage and disadvantage of a heart transplant?

Answer 32

Advantage:
-Work better than artificial hearts

Disadvantage:
- Risk of surgery
- Could be rejected