J. Short answer questions
1. Name the three types of blood cells and blood vessels.
2
Answers
Answer:
healthdirect australia logo Menu
HealthdirectFree Australian health advice you can count on.
Search our site
MenuClose
Home
Health topics A-Z
Conditions
Symptoms
Procedures
Life stages
All topics
Medicines
Symptom checker
Service finder
Blood and blood vessels carry cells, nutrients and oxygen around the body.Blood and blood vessels carry cells, nutrients and oxygen around the body.
SHARE
beginning of content
Blood and blood vessels
2-minute read
Blood, the heart and the vessels that carry blood around the body together make up the cardiovascular system. They are vital for carrying nutrients, oxygen and waste around the body.
Blood is made of cells and plasma. There are 3 main types of blood cells — red cells, white cells and platelets. All are made in the marrow found in many bones.
Red blood cells deliver oxygen from the lungs to the rest of the body, and carry waste products to be released by the lungs or the kidneys. Red blood cells contain haemoglobin, which is the protein that binds and releases oxygen.
White blood cells are part of the immune system. They detect and fight infections or foreign molecules that enter the body.
Platelets are small cells that help the blood clot.
Plasma is the clearish fluid that carries the cells. It also carries the nutrients from our diet such as sugars, fats, proteins, vitamins and minerals.
As well as carrying cells, nutrients, oxygen and waste, blood also helps to regulate body temperature.
What are blood vessels?
Blood vessels carry blood around the body. The 3 main types of blood vessels are:
arteries that carry blood pumped from the heart — these are the largest and strongest
veins that return blood to the heart
capillaries, which are tiny vessels that connect arteries and veins, and allow blood to come into close contact with tissues for the oxygen, carbon dioxide, food and waste
Blood leaves the heart in large arteries, then moves through progressively smaller ones to the capillaries in tissues. The blood then leaves the tissues in veins that get larger as they get closer to the heart.
The arteries can expand and contract to lower or increase blood pressure, according to your needs.
Diseases of blood and blood vessels
The blood can be affected by trauma or diseases in other parts of the body leading to anaemia, a lack of red blood cells that reduces supply of oxygen to tissues, or polycythaemia, in which there are too many red blood cells. Also, there are cancers of blood cells like leukaemia.
Problems with blood vessels can also lead to high blood pressure, heart attack andstroke
Answer:
1. Red blood cell, white blood cell, platelets
2. Arteries, veins, capillary