1741539
Description
Flashcards by maddiekilmartin, updated more than 1 year ago
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Created by maddiekilmartin
almost 10 years ago
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| Question | Answer |
| State the definition of homeostasis and give two examples | Maintaining the right conditions inside your body so that everything works properly 1. Blood glucose 2. Osmoregulation |
| Why is homeostasis important? | Conditions in your body need to be kept steady so that cells in your body can function properly |
| What may happen if homeostasis is not maintained? | Your body will shut down |
| What happens to our urine if we do not drink enough water? | Urine will give off a strong sour smell with a deep colour of yellow |
| What happens to our skin when we become cold? | 1. When cold, our hairs on our skin stand to trap a layer of air to keep us warm 2. Blood vessels near the surface of our skin constrict. **This means less blood flows near the surface, so less heat is transferred to the to the surroundings. |
| State the normal body temperature in humans? | 37 degrees Celsius |
| Why is this temperature (human body temperature) maintained? | To fight off unfriendly bacteria's and illnesses |
| State the part of the brain that monitors temperature | The hypothalamus |
| State the sense associated with the organ; 1. Ears 2.Eyes 3. Skin 4. Tongue 5. Nose | 1. Sound 2. Sight 3. Feel 4. Taste 5.Smell |
| Why is it an advantage for an organism to possess a nervous system? | Because it can then react to its environment |
| Name the parts of the central nervous system | Brain and the Spinal Cord |
| What is the peripheral nervous system made up of | Nerve fibres that branch off from the spinal cord and extend to all parts of the body, including the neck and arms, torso, legs, skeletal muscles and internal organs |
| What is the function of the Cerebellum? | Coordinates movement and balance |
| What is the function of the Medulla? | Controls automatic actions like heart beat and breathing |
| What is the function of the Frontal lobe? | Controls higher mental functions like choice and memory |
| What is the function of Cerebral hemisphere? | Responsible for numerical computation, language and emotions |
| What is a motor neuron and what does it do? | It is a nerve cell forming part of a pathway along which impulses pass from the brain or spinal cord to a muscle or gland |
| What is meant by the term voluntary responses? | Voluntary responses are mainly under conscious control, but some voluntary movements, such as walking, require less conscious attention. |
| What is meant by the term involuntary responses? | There are two types of involuntary response, autonomic and reflex. Autonomic responses regulate the body's internal environment. |
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