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Flashcards in Tissues - blood Deck (22)
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1

What type of tissue is blood?

Connective tissue

2

What 4 things is the blood made up of?

Plasma
Red blood Cells
Thrombocytes
WBC's

3

What is an erythrocyte?

A red blood cell

4

What are thrombocytes?

Platelets

5

What is plasma?

Mainly water, some carried dissolved gasses, and proteins/plasma-proteins to help blood clotting/transport/defence against invading organisms

6

What is the matrix?

The background material in which various types of cells lie

7

What are RBC's/Erythrocytes?

Small cells with elastic membrane which are oval and biconcave - they distort to travel through small capillaries, have no nucleus and are packed with haemoglobin

8

What are the two differing bloods flowing throughout the body?

Oxygenated blood (arterial blood)
Deoxygenated blood (venous blood)

9

What are the three types of white blood cells?

Neutrophils
Eosinophils
Basophils

10

How can we identify wbc's physically?

They contain granules in their cytoplasm

11

Which two wbc's are phagocytic and what does this mean?

Neutrophils and Eosinophils - capable of changing their shape and engulfing foreign bodies (e.g. bacteria/carbon particles)

12

What do neutrophils do?

They kill and digest bacteria and fungi - most numerous wbc and the first line of defence

13

What do Eosinophils do?

They attack and kill parasites/cancer cells - also help with allergic responses

14

What do basophils do?

Prevent blood clotting, they sound an alarm when infectious agents invade the blood, help bring about allergic reactions (e.g secrete chemicals like histamine - a marker of allergic disease)

15

What are lympocytes?

Small wbc's which assist in production of antibodies - made in the bone marrow, some enter the blood stream and some the lymphatic system

16

What is the mechanism of lymphocytes?

They assist in making antibodies which neutralise the antigens found on the surface of pathogens, preventing the microbe from multiplying

17

What are monocytes?

Wbc that ingests harmful foreign material, can travel to site of infection and begin phagocytosing pathogen

18

Structure of lymphocytes?

Smaller wbc than granulocytes - round nuclei and clear cytoplasm

19

What are the Granulocytes?

The three types of wbc known for containing granules in their cytoplasm and having varying shapes of nuclei, usually lobed into three segments

20

Structure of Monocytes?

Larger wbc than lymphocytes - large round nuclei and clear nuclei

21

What are thrombocytes also known as and what do they do?

Platelets - they're products of much larger cells - play a big role in blood clotting

22

What are leuocytes?

Larger nucleated cells - less numerous, which can alter their cell shape
-Granulocytes
-lymphocytes
-monocytes