RBC, squamous and columnar epithelium

Question 1

Why do RBC contain haemoglobin

Answer 1

to bind to oxygen

Question 2

How many oxygen molecules can each haemoglobin carry

Answer 2

4

Question 3

What 3 parts of a usual cell does a red blood cell not contain

Answer 3

nucleus
endoplasmic reticulum
mitochondria

Question 4

What is the shape of a red blood cell
What does it do

Answer 4

biconcave
gives large surface to volume ratio

Question 5

why does a RBC not contain the 3 organelles

Answer 5

to allow more room to transport oxygen

Question 6

are RBC large or small
why

Answer 6

small so they can fit through narrow capilaries

Question 7

What are the 2 types of epithedial tissue

Answer 7

squamous
columnar

Question 8

What are the adaptions for squamous epithelial cells

Answer 8

thin wall, short diffusion pathway for faster diffusion

In the alveoli in the lungs O2 and CO2 can diffuse through the squamous epithelium

Question 9

How are squamous epithelial cells adapted to help gas exchange

Answer 9

is only 1 cell thick

O2 will diffuse down the concentration gradient from alveoli to capillary

CO2 will diffuse down the concentration gradient from capillary to alveoli

Higher concentration of oxygen in the alveoli than the capillary

Higher concentration of carbon dioxide in the capillary than the alveoli

The blood is always moving, and you are constantly breathing in & out which maintains a concentration gradient

Question 10

What happens when you get chronic bronchitis

Answer 10

• airways become inflamed
• squamous epithelial thickens
• airways become blocked, making it hard to breathe
• secrete excessive mucus which you cough up

Question 11

What happens when you get emphysema

Answer 11

caused by smoking
damaged alveoli by destroying squamous epithelial
causes bigger air spaced in the alveoli which decreases the surface area for gas

Question 12

Columnar epithelial tissue

Answer 12

• found in the trachea in the lungs
• The trachea is a tube, and it is surrounded by a single layer

Question 13

How is columnar epithelial cells adapted to its function

Answer 13

• Have cilia and mucus to trap and waft pathogens out of the lungs

Question 14

what is emphysema and chronic briochotic

Answer 14

Emphysema is a lung condition where alveoli
become damaged.

Chronic bronchitis is a lung condition that destroys tiny hairs (cilia ) in the airways of the lungs

Question 15

What is cilia function

Answer 15

move mucus and trapped pathogens up and out of the lungs and respiratory system

Question 16

What is the job for goblet cell

Answer 16

secrete mucus and create a protective mucuc layer