Lymphatic System + spleen

Question 1

What is the lymphatic system?

Answer 1

A body- wide network of vessels that traps fluid escaped from blood vessels, and returns it to the blood supply

Question 2

What does the lymphatic system do for tissues?

Answer 2

Stops tissues swelling

Question 3

What does the lymphatic system absorb?

Answer 3

Harmful bacteria and other dangerous substances

Question 4

How does the lymphatic system work? Part 1: blood pressure

Answer 4

Blood pressure forces fluid from tiny blood vessels into surrounding tissues. Most fluid finds its way into tiny blood vessels, but some enters the lymph vessels.

Question 5

How does the lymphatic system work? Part 2: thoracic duct

Answer 5

Fluid flows towards the thoracic duct or to the right lymphatic duct The forces that drive it are muscle activity and pulsating blood vessels

Question 6

How does the lymphatic system work? Part 3: lymph travels

Answer 6

Most lymph travels upwards. From the thoracic duct lymph drains back into the blood supply near theleft shoulder.

Question 7

How does the lymphatic system work? Part 4: draining

Answer 7

From the right lymphatic duct lymph drains back into the bloodstream near the right shoulder

Question 8

What prevents fluid from tiny blood vessels flowing back down when it travels?

Answer 8

Valves in lymph

Question 9

Structure of the lymphatic system: similar to what?

Answer 9

A system of rivers and tributaries

Question 10

What are lymph?

Answer 10

A salty straw-coloured liquid (like the fluid part of blood), but with less protein

Question 11

Structure of the lymphatic system: vessels

Answer 11

The systems many tiny vessels join up to form a few large ones

Question 12

Structure of the lymphatic system: names of vessels

Answer 12

Thoracic duct, right lymphatic duct, lymph nodes.

Question 13

Structure of the lymphatic system: thoracic duct

Answer 13

Largest of all vessels; runs up the body in front of the spine

Question 14

Structure of the lymphatic system: right lymphatic duct

Answer 14

Another large vessel; runs through the right arm and shoulder

Question 15

Structure of the lymphatic system: lymph nodes

Answer 15

Bumpy swellings that occur in the neck, armpits, above the groin and elsewhere

Question 16

What do lymph nodes contain?

Answer 16

White cells that absorb harmful substances such as bacteria

Question 17

Lymph circulation:

Answer 17

Heart then artery, then capillaries, then vein, and then lymph duct

Question 18

What does the spleen do? (basic idea)

Answer 18

Plays a part in circulation and combating infection

Question 19

Structure and location of the spleen:

Answer 19

A spongy, fist - sized purplish object;
Located in front of the spine, below the diaphragm, and left of and behind the stomach

Question 20

Function of the spleen:

Answer 20

Manufactures some of the blood formed in the body before birth.

Question 21

Function of the spleen: what it contains

Answer 21

Contains cells that kill old or injured blood cells and destroy bacteria and parasites.

Question 22

Function of the spleen: what it produces

Answer 22

Antibodies

Question 23

What are antibodies?

Answer 23

Proteins attacking viruses and other agents of infection