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6. What is the neuronal system?
- An interconnected network of neurones that signal each other across synapse junctions with slow responses
- An interconnected network of neurones that signal each other across synapse junctions with rapid responses
- A system that uses the blood to transport signals by releasing a hormone which is then recognized by a target cell
7. Where is the Hypothalamus?
- The Brain
- The Liver
- The Kidneys
8. What is an Ectotherm?
- An organism that relies on external sources of heat to regulate its body temperature
- An organism that can control the loss and production of heat to regulate body temperature
- A receptor found in the membrane of the skin
9. If there is a FALL in body temperature does the Hypothalamus...
- Send signals to effector cells and cause Vadodilation, Sweating and No adrenaline released
- Send signals to effector cells and cause Vasoconstriction, Shivering and Adrenaline to be released
- Send signals to effector cells and cause Vadodilation, Less sweating and Shivering
10. What is an Endotherm?
- A receptor found in the membrane of the skin
- An organism that can control the loss and production of heat to regulate body temperature
- An organism that relies on external sources of heat to regulate its body temperature
11. Which INCREASES body heat?
- Shivering, Less sweating and Vasoconstriction
- Sweating, Hairs lying flat and Vasodilation
- Sweating, Hairs standing up and Vasoconstriction
12. What is Negative feedback?
- A process in which any change in a parameter brings about an decrease in that change
- A process in which any change in a parameter brings about the reversal of that change so the parameter is kept fairly constant
- A process in which any change in a parameter brings about an increase in that change
13. What is cell signalling?
- A process where a chemical is released by one cell and is detected by the same cell moments later
- A process where one cell releases a chemical that is detected by another cell, which then responds to the signal released from the first cell
- Where a signal from a cell is sent away from cells to a remote location of the body (random)
14. What are Receptors?
- They detect stimuli and some are cells or proteins on cell membranes
- They are cells that bring about a response to a stimulus to produce an effect
- A change in behaviour or physiology as a result of a change in environment
15. What is an Effector?
- They are cells that bring about a response to a stimulus to produce an effect
- They detect stimuli and some are cells or proteins on cell membranes
- A change in behaviour or physiology as a result of a change in environment
16. What is Homeostasis?
- The maintenance of a constant internal environment despite external changes
- The maintenance of a constant external environment despite internal changes
- A change is behaivour or physiology as a result of a change in environment