Blood Basics: 18 flashcards
All 18 flashcards from this kit, free and with no sign-up.
1. What are the main components of blood?
Show the answer
Blood is composed of plasma (the liquid part) and blood cells (RBCs, WBCs) and cell-like bodies.
2. What substances are carried by plasma?
Show the answer
Plasma carries nutrients (glucose, lipids, amino acids), cellular wastes, and hormones.
3. What percentage of oxygen is dissolved in plasma?
Show the answer
About 1.5% of oxygen is present in plasma in dissolved form.
4. How is carbon dioxide carried in plasma?
Show the answer
About 5-7% of carbon dioxide is carried dissolved in plasma, mostly as bicarbonate ions.
5. What is the shape of red blood cells (RBCs)?
Show the answer
RBCs are disc-shaped (biconcave) with a depression at the centre.
6. What pigment do RBCs contain and what does it do?
Show the answer
RBCs contain haemoglobin, which turns bright red in the presence of oxygen and dark red when deoxygenated.
7. What is the normal count of RBCs per mm³ of blood?
Show the answer
4 to 5.5 million RBCs per mm³ of blood.
8. Where are RBCs formed before and immediately after birth?
Show the answer
In the liver and spleen.
9. Where are RBCs formed in adults?
Show the answer
In the red bone marrow of short bones such as the sternum, ribs, and vertebrae.
10. What happens to the nucleus and organelles during RBC formation?
Show the answer
They are broken down.
11. What is the average life span of an RBC?
Show the answer
About 120 days.
12. Which organs remove old RBCs?
Show the answer
The spleen and liver.
13. How many RBCs die and are replaced every second?
Show the answer
About 2 million RBCs die and are replaced every second.
14. What is the shape and color of white blood cells (WBCs)?
Show the answer
WBCs are colourless and have irregular shapes.
15. Where are WBCs formed?
Show the answer
In the red bone marrow. Some WBCs mature in lymph nodes, tonsils, thymus, or spleen.
16. How do WBCs compare to RBCs in size and number?
Show the answer
WBCs are larger in size and less in number than RBCs.
17. What is the normal count of WBCs per mm³ of blood in adults?
Show the answer
An average of 7000 WBCs per mm³ of blood.
18. What is the main function of WBCs?
Show the answer
They defend the body against diseases.
Your notes can be a kit like these
Every kit here was made from real study material. Point Veda at a chapter, a PDF, a photo or a link and get notes, flashcards, practice MCQs, games and a scored test — free, in 42 languages.
- Chapter notes
- Flashcards
- Practice MCQs
- Scored tests
- Exam prep
Get Veda free See what students get
Free to start · No ads · Works in 42 languages