1 / 14

The Nervous and Endocrine Systems ( Coordination )

The Nervous and Endocrine Systems ( Coordination ). Unit 1-10 Notes Mr. Hefti – Pulaski Biology. Nervous & Endocrine System Fun Facts. There are more nerve cells in the human brain than there are stars in the Milky Way!

helki
Download Presentation

The Nervous and Endocrine Systems ( Coordination )

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Nervous and Endocrine Systems (Coordination) Unit 1-10 Notes Mr. Hefti – Pulaski Biology

  2. Nervous & Endocrine System Fun Facts • There are more nerve cells in the human brain than there are stars in the Milky Way! • If we lined up all the neurons in our body it would be around 600 miles long. • There are 100 billion neurons in your brain alone. • The left side of human brain controls the right side of the body and the right side of the brain controls the left side of the body. • The total surface area of the human brain is about 25,000 cm2. • Only 4% of the brain's cells work while the remaining cells are kept in reserve. • The nervous system can transmit impulses as fast as 100 m/s. • Potassium and sodium ions are vital to the proper functioning of the nervous system. • There are 30 hormones in the human body! • The sense of thirst and hunger is triggered in our body by the hypothalamus gland. • The pineal gland induces sleep in our body. It produces a hormone named melatonin which controls the sleep cycle of our body.

  3. Cell body (light blue) Dendrites (light blue) Terminal branches (light green) Nucleus (gray) Axon (red) A Insulative coating (yellow) Synaptic knobs (dark green) A neuron – the smallest functional unit of the nervous system!

  4. Cerebrum (white) B Learning, thinking, emotions, memory… Cerebellum (orange) Balance Involuntary control of organs Brain stem (purple) Spinal cord (yellow) Reflexes

  5. Axon end (red) Neuro-transmitters (blue) C Synaptic knob (dark green) Cell membranes (orange) Synapse (tan) Dendrite (light blue) How do nerve cells carry messages?

  6. Axon (red) Junction (yellow) This is where neurons and muscles meet up… it is called a neuro-muscular junction! D Muscle (brown) Axon end (red) Neurotransmitters (blue)

  7. Q: How do the hormones get into the blood? A: Diffusion and active transport!!!

  8. Pineal (black) E Hypothalamus (black) Pituitary (dark green) Parathyroid (tan) Thyroid (orange) Thymus (light blue) Adrenal (red) Pancreas (yellow) Ovary (pink) Testes (light blue) The endocrine system glands make hormones!

  9. F Target cell (orange) Receptor (black) Response! Endocrine gland (such as adrenals – red) Active site (black w/ blue) Hormone(such as adrenaline - blue) Receptors (green) How do hormones work? Non-target cells (yellow)

  10. Make connections… • Which organelle performs a similar role to the one provided by the nervous and endocrine systems? • Nucleus • If these organ systems are the ones that regulate, why do they need the other organ systems? • They require a tremendous supply of nutrients and oxygen and generate wastes that must be removed.

More Related