Blood Flashcards
What decreases glucose in the blood
Insulin
What increases glucose in the blood
Glucagon
What happens if there is too much glucose in your blood
The pancreas releases insulin, which causes the liver to convert glucose into glycogen
What happens if there is too little glucose in your blood
The pancreas releases glucagon, which causes the liver to covert glycogen to glucose
How is type 1 diabetes caused
A pancreas that doesn’t work
How is type 2 diabetes caused
Malnutrition and resistance of insulin
Symptoms of type 1 diabetes
Very thirsty and hungry, weight loss and tiredness
Symptoms of type 2 diabetes
Headaches, tiredness, extremely hungry and thirsty
How can type 1 or type 2 diabetes be detected
Average blood sugar is too low or high
What materials are in the blood
Glucose, hormones,oxygen, red and white blood cells, testosterone and estrogen
3 types of blood vessels
Arteries - blood AWAY from the heart
Veins - blood TOWARDS the heart
Capillaries - exchange of materials with the tissues
Structure of arteries
Strong and thick
Stretchy
Thick walls and small lumen to stay strong at high blood pressure
Structure of veins
Thin walls
Large lumen
Muscles outside veins help push blood along
One-way valves to prevent back flow of blood
Structure of capillaries
Smallest vessel
Walls only one cell thick - short diffusion distance
