year 10- Blood

Question 1

Blood vessel

Answer 1

• part of the circulatory system
• transports blood through the body (either to/from the heart or diffuse gases)
• arteries, capillaries and veins.

Question 2

White blood cells

Answer 2

Protect the body against disease and foreign bacteria

Question 3

Red blood cells

Answer 3

Carry oxygen through hemoglobin through the body. They live for 120 and are made from iron in bone marrow.

Question 4

Platelet

Answer 4

There are 150000 to 350,000 in each micro litre of blood they maintain homeostasis and prevent bleeding

Question 5

What is the vessel wall and what are its layers

Answer 5

The vessels make up two closed systems of tubes that begin and end at the heart.
Tunica adventitia
Tunica media
Tunica intinia

Question 6

Tunica adventitia

Answer 6

The outer coat of the blood vessel in arteries and veins. Composed of collagen and in arteries is supported by external elastic lamina

Question 7

Tunica media

Answer 7

Muscular middle layer. In arteries it is smoother it vastocontracts when narrowing the blood vessel to regulate body temp and blood pressure

Question 8

Tunica intina

Answer 8

The innermost layer! Composed of a thin layer of endothelial cells and lines the entire circulatory system. Capillaries only have this. It has an ultra thin design to allow for nutrients and gasses to be exchanged.

Question 9

Blood disease I am studying and it’s description

Answer 9

Anemia

A condition in which you don’t have enough healthy blood cells to carry adequate oxygen to the body’s organs and tissues

Question 10

The three most common causes for anemia

Answer 10

Iron deficiency anemia: caused by a shortage of iron. In your body. The bone marrow needs iron to produce hemoglobin. Without this your body can’t produce enough hemoglobin for red blood cells. This often occurs in many pregnant women. It’s also caused by blood loss.
Vitamin deficiency anemia: your body needs folate and vitamin b-12 to produce enough healthy red blood cells. A diet lacking in these can cause decreased red blood cell production. Some people can’t process B-12 which also causes this.
Sickle cell anemia: this is inherited and is caused by a defective form of hemoglobin that forces red blood cells to assume a abnormal sickle shape. These irregular blood cells die early resulting in a chronic shortage of blood cells.

Question 11

Anemia complications

Answer 11

Causes very servere fatigue
Pregnancy Complications such as premature birth
Heart problems- an irregular heartbeat
Death- especially in sickle cell anemia people can lose a lot of blood easily and quickly and this results in acute servere anemia and can be fatal.

Question 12

Anemia treatment

Answer 12

It depends on the underlying diagnosis. Iron supplements can be used for iron deficianxh, vitamin B for low vitamin levels, blood transfusions for blood loss, rarely a bone marrow transplant, chemotherapy