section 2. (4) describe the main changes in the chemical composition of the blood as it moves around the body and identify tissues in which these changes occur Flashcards
(9 cards)
1
Q
What are the 4 basic chemical groups which the transport system moves around the body?
A
- gases
- nutrients
- wastes
- hormones
2
Q
How does blood pass through the heart?
A
- deoxygenated blood enters through the right atrium (via vena cava). this blood is high in urea/ nitrogenous wastes and low in glucose/nutrients
- the pulmonary artery carries deoxygenated blood from the heart to lungs
- after being in the lungs, the pulmonary vein carries blood (oxygenated) to the left atrium of the heart
3
Q
What happens to the blood in the lungs?
A
- gains oxygen and loses carbon dioxide
4
Q
Blood leaving muscle tissue…
A
- Has more Carbon dioxide, less oxygen, less glucose and less amino acids
- there is internal gaseous exchange in all organs due to cellular respiration
5
Q
What happens to blood in the liver?
A
- undergoes a deamination of amino acids/ urea is formed
- glucose levels are regulated by the formation of glycogen
- Alcohol, old RBC’s and vitamins are broken down
- blood leaving the liver has less glucose, less amino acids and more urea
6
Q
What happens to blood in the kidneys?
A
- removal of waste products such as urea
- removal of excess salt and water
- reabsorption of amino acids and glucose
- Blood leaving the kidneys has; less urea, less salts and less water.
7
Q
What happens to blood in the intestinal/digestive tract?
A
- nutrients are reabsorbed into the bloodstream
- blood leaving intestines has more glucose, more amino acids, more fatty acids and glycerol, more vitamins and less oxygen
8
Q
What do endocrine glands do?
A
- secrete hormones
- blood leaving endocrine glands has more hormones
9
Q
what does blood do when passing through reproductive organs and bone marrow?
A
- picks up hormones when passing through reproductive organs
- picks up new RBC’s and WBC’s
