The Circulatory System - The Blood Flashcards Preview

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Flashcards in The Circulatory System - The Blood Deck (19)
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1
Q

Is a blood a tissue?

A

Yes

2
Q

What are the four main things in blood??

A

Red blood cells
White blood cells
Platelets
Plasma

3
Q

What to red blood cells carry?

A

Oxygen

4
Q

What is the job of red blood cells?

A

Carry oxygen from the lungs to all the cells in the body

5
Q

What shape to red blood cells have? Why?

A

Biconcave shape to give a large surface area for absorbing oxygen

6
Q

Do red blood cells have a nucleus? Why?

A

No, more room to carry oxygen

7
Q

Red blood cells contain a red pigment called…

A

Haemoglobin

8
Q

In the lungs, haemoglobin combines with [ ] to become [ ]

A

oxygen

oxyhaemoglobin

9
Q

In blood tissues - oxyhaemoglobin splits into [ ] and [ ], to release [ ] to the cells

A

haemoglobin
oxygen
oxygen

10
Q

What do white blood cells do?

A

Defend against disease

11
Q

White blood cells can change shape to engulf unwelcome [ ]

A

microorganisms

12
Q

What to white blood cells produce to fight microorganisms? what do they produce to neutralise any toxins produced by microorganisms?

A

Antibodies

Antitoxins

13
Q

Do white blood cells have a nucleus?

A

Yes

14
Q

What do platelets do?

A

Help blood clot

15
Q

What are platelets?

A

Small fragments of cells with NO nucleus

16
Q

Why do platelets need to help blood clot around a wound?

A

To stop blood pouring out and to prevent microorganisms from enetring

17
Q

What can a lack of platelets cause?

A

Excessive bleeding and bruising

18
Q

What does plasma do?

A

Carries everything in the blood

19
Q

What does plasma carry?

A

red blood cells, white blood cells, platelets, glucose, amino acids, CO2, Urea, Hormones, antibodies and antitoxins