Responding

Responding

• Responses enable us to changes around us- enhances our chances of survival in a world full of potential threat.
• Respond to info recieved ok our surrounding
• Eg respond to increase temp by increasing sweating, increased blood flow to skin, change clothing.
• Homeostasis- ability of body to stay the same eg always have same body temp same ph blood, glucose levels.
• Requires sequence of steps known as a stimulus - response model
• Sense receptor stimulated (heat, light, pressure etc) -> message sent to an effector (organ such       as a gland or muscle ) which must respond.
• Heat and pain receptors send messages via nerves to an arm muscles to move 
• Total response is often complex involving several parts of the body, some kind of coordination is required.
• Number of structures to detect, transmit, coordinate and respond to stimuli.