Homeostasis
Thermoregulation and blood glucose
Nervous and endocrine
excretory and digestive
Respiratory and circulatory
100
What is a stimulus
Environmental change
100
what is thermoregulation
the regulation of body temperature
100
What does the endocrine system do?
Uses chemical messengers called hormones to regulate body functions.
100
What does the renal artery do
Carries blood from body to kidneys
100
Label 1-5
1: pulmonary artery
2: vena cava
3: pulmonary veins
4: right atrium
5: left atrium
200
What is negative feedback?
The response counteracts the stimulus
200
What is vasocontriction
When body temperature drops, blood vessels in the skin get narrower, reducing the volume of blood near the skin surface, and reduces heat loss.
200
What is adrenaline
It is the hormone that triggers the fight-or-flight response.
200
What is the difference between the small intestine and large intestine?
Small intestine: Main site for absorption of food
Large intestine: Removes water from undigested food
200
Label 6, 7, 8, 9
6: larynx
7: Trachea
8: alveoli
9: bronchus
300
Describe the components of a homeostatic loop
Receptor, Control Center, effector
300
How does sweat work to regulate body temperature?
Produced by sweat glands, sweat evaporates & takes heat away from the body.
300
compare motor neurons and sensory neurons
Sensory neurons carry impulse generates from stimulus to CNS, whereas motor neurons connect sensory neurons to motor neurons.
300
How is reabsorption important to homeostasis
Substances the body needs such as glucose are reabsorbed in the bloodstream
300
Explain the function of the alveoli
Air sacs in the lungs that exchange carbon dioxide and oxygen in the blood.
400
What is positive feedback?
the response reinforces the stimulus, reinforcing the response.
400
What occurs during hyperglycemia
Insulin is released to lower your blood sugar levels
400
What role does the CNS play in the nervous system?
The control center: Receives information and sends out messages
400
How does the appendix maintain homeostasis?
It doesn't
400
How is oxygen picked up in red blood cells?
Haemoglobin molecules inside red blood cells pick up and carry the oxygen.
500
State 2 things that is maintained in our body due to homeostatis.
Blood Glucose and temperature regulation.
500
When is glycogen released and what effects does it have on blood sugar levels?
Glycogen is released during hypoglycaemia (when your blood sugar is too low) When glycogen is released, your blood glucose levels increase.
500
What are some functions that hormones regulate?
(3 things)
-Level of glucose in blood and glucose breakdown
-water levels in body
-Heat production
- Sexual maturity
-Sperm and egg production
- growth of cells and tissues
500
How do kidneys maintain homeostasis?
Maintains the balance of vitamins, minerals, water and waste concentration.
500
Where does oxygenated blood travel to and which side of the heart is it pumped out from?
Oxygenated blood travels to the entire body and it is pumped out from the left side of the heart.