nervous and endocrine system + homeostasis pt 2

Question 1

what does the nervous system do

Answer 1

Control quick + immediate responses using neurons

Question 2

neurons

Answer 2

neurons - transmit electrochemical impulses from one part of the body to another
- Parts of a neuron (nerve cells)
-Dendrites - receive stimulus then send electrical signals toward cell body
- Cell Body - contains all organelles
- Axon - moves electrical signals from cell body to end of neuron
- Myelin Sheath - covers axon + helps to quickly transmit signal down axon
- Axon Terminal - neurotransmitters are released into empty space between neurons (synapse) and send information to next neuron

Question 3

path of response (kicking a ball)

Answer 3

1. Sensory Receptors - convert stimuli into nervous signals
2. Sensory Neurons
3. Spinal Cord
4. Brain
5. Spinal Cord
6. Motor Neurons (interneurons)
7. Effectors (Muscles/Glands in Leg) - produce response

Question 4

path of reflex

Answer 4

1. Sensory Receptors
2. Sensory Neurons
3. Interneurons
4. bypasses brain
5. Motor Neurons
6. Effector

Question 5

what does the endocrine system do and what is it made up of

Answer 5

1. Regulates mood + metabolism + tissue function + growth and development + reproductive processes
2. Made up of glands that secrete hormones into bloodstream

Question 6

hormones

Answer 6

Hormones - chemical messengers that targets specific groups of cells in order to cause that group of cells o do some activity or stop doing an activity
- Bind to chemical receptors on target cells
- Proteins with specific shapes

Question 7

glands

Answer 7

Glands - structures that produce hormones
- Pituitary gland - master gland
- Adrenal Glands
- Thyroid Glands - regulates body’s metabolism
- Parathyroid Glands
- Pancreas - produces hormones: insulin and glucagon (regulate blood glucose levels)
- Insulin - hormone which regulates amount of glucose in blood
- Glucagon - promotes breakdown of glycogen to glucose in liver

Question 8

hypothalaums

Answer 8

Hypothalamus - links nervous system and endocrine system
- Nervous - receives internal sensory information
- Endocrine - controls secretions of pituitary gland
- Secretes a hormone that will trigger + activate pituitary gland to secret other hormones all over the body

Question 9

homeostasis

Answer 9

Nervous - sends quick and immediate responses to stimuli using neurons (i.e reflexes)
Endocrine - send slower and longer lasting responses to stimuli using hormones (i.e puberty, release of hormones to store sugar in liver when eating foods high in sugar)