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

1
Q

What are the 4 basic chemical groups which the transport system moves around the body?

A
  • gases
  • nutrients
  • wastes
  • hormones
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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
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3
Q

What happens to the blood in the lungs?

A
  • gains oxygen and loses carbon dioxide
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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
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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
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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.
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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
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8
Q

What do endocrine glands do?

A
  • secrete hormones

- blood leaving endocrine glands has more hormones

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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

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