Homeostasis

Question 1

Define homeostasis

Answer 1

How the body regulates internal conditions to keep a constant environment

Question 2

What is the pathway for an electrical impulse

Answer 2

Stimuli - receptor- sensory neuron - brain/spinal cord-relay neuron-motor neuron- effector- response

Question 3

What is the pathway of a reflex arch

Answer 3

Receptor-sensory neuron-spinal cord -relay neuron-motor neuron-effector-response

Question 4

How does an electrical impulse travel across a synapse

Answer 4

1Impulse reaches the end of the transmitter neuron
2It stimulates the release of neurotransmitter chemicals
3They diffuse across the synapse
4They bind to receptors on the next neuron
5This generates a new impulse with an identical message

Question 5

What is the endocrine system

Answer 5

It is a second coordination system of the body.

It is made up of different glands which produce certain hormones.

Question 6

What is a hormone

Answer 6

A chemical messenger
Released by a gland
It binds to individual organs causing the needed response to occur

Question 7

How does the body bring down blood sugar levels

In steps

Answer 7

Pancreas detects blood sugar levels are too high

It then releases a hormone called insulin

This hormone travels into the bloodstream binding to cells and the liver

It tells the liver and multiple cells to start to bring in excess glucose and store it as GLYCOGEN

Question 8

How does the body increase blood sugar levels

In steps

Answer 8

Pancreas detects that blood glucose levels are too low

It releases a hormone called GLUCAGON

This hormone travels through the bloodstream and binds to receptors on the liver

It tells the liver to release stored glucose into the body