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Science exam
Year 9 Biology - Body systems
| Question | Answer |
|---|---|
| What is the job of the endocrine system? | The endocrine system is made up of glands that produce and secrete hormones, chemical substances produced in the body that regulate the activity of cells or organs. These hormones regulate the body's growth |
| Define Neuron & dendrite | Dendrites branch-like structures of neurons that extend from the cell body (Soma). The dendrites receive impulses (chemical signals) The signal travels in the same direction In this way infor travels all around your body by going from neuron to neuron. |
| Pituitary Gland | The pituitary gland is a pea-sized structure located at the base of the brain, just below the hypothalamus, to which it is attached via nerve fibres. It is part of the endocrine system and produces critical hormones. |
| Hypothalamus | The hormones from the hypothalamus govern physiologic functions such as thirst, hunger, sleep, mood, sex drive, and the release of other hormones within the body. This area of the brain houses the pituitary gland and other glands in the body. |
| Adrenal Gland | Top of each kidney, the adrenal glands produce hormones that help the body control blood sugar, burn protein and fat, react major illness or injury, and regulate blood pressure. Two of the most important adrenal hormones are cortisol and aldosterone. |
| Thyroid Gland | The thyroid is part of the endocrine system, which is made up of glands that produce, store, and release hormones into the bloodstream so the hormones can reach the body's cells. The thyroid gland eat to make two main hormones: Triiodothyronine Thyroxine |
| Baby fall | This could cause problems for a child because the limbs won’t move and this is called paralysis. |
| What are the differences between the nervous system and the endocrine system? | The nervous system can respond quickly to stimuli, through. Responses to nervous system stimulation are quick but short lived. The endocrine system responds to stimulation by secreting hormones into the circulatory system that travel to the target tissue. |
| What is the difference between a gland and a target organ- give some examples | Gland always secretes substances but not all the organs secrete substances. Gland is always a tubelike structure but organ is not always in that nature. Ex: liver is a dense organ but stomach is a hollow organ. |
| Stepped on a nail | Stimulus, receptor, coordination centre, effecter and response |
| Hormone | There are multiple glands throughout the body, and each gland produces specific hormones designed to carry out certain functions. It also has the potential to be very overwhelming at times. |
| List three endocrine gland and the hormones they produce. | Hypothalamus, Pineal Gland, Pituitary Gland, Thyroid, Parathyroid, Thymus, Adrenal, Pancreas, Ovaries and Testes |
| What is the difference between conscious and reflex response? | The difference between a reflex and a reaction is that a reflex is an involuntary response to stimuli, while a reaction is a voluntary, intentional response that requires thought. |
Created by:
ROMfrizzem
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