Requirements for Life or Immune System
Water and oxygen
Identify the two major organs in the circulatory system
Heart and Lungs
Identify two major components of the nervous system
Brain, spinal cord, nerves
What is the key function of the digestive system?
To break food down into nutrients that are able to pass into the blood
The model used to describe homeostatic processes is called the stimulus-??? model?
Response
What does MRS GREN stand for?
Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition
Which direction is the blood flow in arteries?
Away from the heart
How does the nervous system send signals?
As an electrical impulse
Where does most mechanical digestion occur?
In the mouth
Give an example of homeostasis
Glucose, water, temperature
List 3 components of the immune system
White blood cells, bone marrow, antibodies
Identify the three main types of blood vessel
Arteries, Veins, Capillaries
How does the endocrine system send signals?
Hormones from various glands
Through what organ do nutrients pass into blood and through the body?
The intestines
Is sweating to cool down a negative or positive feedback response?
Negative feedback
Describe the three lines of defence in the human body's immune system
1 - Barriers
2 - General Response
3 - Specific Response
What is the cellular respiration equation?
Glucose + Oxygen = Water + Energy + Carbon Dioxide
Contrast the response and action times of the nervous system and endocrine systems responses
Nervous - fast and quick, Endocrine slow and long-term
Which two organs are responsible for filtering water, and creating and storing urine as a waste product?
Kidneys and bladder
List the four main types of receptors
Thermoreceptor, chemoreceptor, photoreceptor, mechanoreceptor
After fighting an infection, why doesn't the antibody count in the body return to 0?
Because the memory is retained in T-cells to fight future infections
Describe the process of gaseous exchange
Oxygen into lungs, through bronchi, bronchioles into alveoli, diffused into capillaries, carbon dioxide out
Describe how the body keeps blood glucose levels steady in a healthy person vs. a diabetic
Pancreas releases insulin to make cells take up more glucose and reduce level, if below set point pancreases releases glucagon. Diabetics will have less steady blood sugar for longer due to no insulin or glucagon release
Which 3 chemicals mostly assist in chemical digestion?
Stomach acids, enzymes and bile
Give an example of a positive feedback response
blood clotting, adrenaline