The Body Systems and Homeostasis - PowerPoint PPT Presentation

1 / 22
About This Presentation
Title:

The Body Systems and Homeostasis

Description:

The Body Systems and Homeostasis How you work and stay alive Regulation Regulation: Maintenance over time. This is mainly done by the Nervous and Endocrine systems ... – PowerPoint PPT presentation

Number of Views:77
Avg rating:3.0/5.0
Slides: 23
Provided by: drblockWi9
Category:

less

Transcript and Presenter's Notes

Title: The Body Systems and Homeostasis


1
The Body Systems and Homeostasis
  • How you work and stay alive

2
Regulation
  • Regulation Maintenance over time.
  • This is mainly done by the Nervous and Endocrine
    systems

3
The Nervous System
  • Controlled by the brain
  • Made of nerves which are bundles of neurons

4
Neuron
5
The Brain
  • Cerebrum Conscious thought, feelings, language,
    humanness.
  • Cerebellum Coordination, balance
  • Medulla Oblongata Involuntary actions.

6
The Brain
7
Synapses
8
The Endocrine system
  • Controlled by the brain pituitary, hypothalamus
  • Made of glands that secrete hormones
  • Examples adrenals, pancreas, testes, uterus

9
(No Transcript)
10
Endocrine vs. Nervous
  • The Endocrine systems sends complex messages (go
    through puberty) that lasts a long time.
  • The nervous systems sends short, simple messages
    (MOVE, JUMP).
  • Endocrine messages are sent using hormones in the
    circulatory system
  • Nervous messages are sent using electrochemical
    signals using the nervous system

11
The Digestive System
  • Breaks down food into nutrients, absorbs
    nutrients, eliminates undigested waste.
  • MouthgtEsophagusgtstomachgtSmall IntestinegtLarge
    IntestinegtExit
  • PERISTALSIS
  • Mechanical Digestion Breaks food into smaller
    pieces (teeth, bile)
  • Chemical Digestion Breaks bonds between atoms
    in the food (enzymes, gastric juices).

12
The Digestive System (pic)
13
The Excretory System
  • The various organs used to get rid of waste
    products
  • Lungs, Skin, Urinary System (kidneys and bladder)

14
Circulation
  • Moves blood throughout the body.
  • Brings nutrients to cells (oxygen), removes waste
    from cells.
  • Blood vessels Heart gt Arteries gt Arteriolesgt
    Capillaries gt veinules gt Veins gt Heart
  • The Heart pumps the blood through the blood
    vessels.

15
(No Transcript)
16
The Heart
17
The Respiratory System
  • Supplies the body with oxygen, which is needed
    for cellular respiration
  • C6H12O6 6o2 -gt 6CO2 6 H20
  • Oxygen and CO2 are exchanged between the body and
    the atmosphere at the lungs.

18
(No Transcript)
19
(No Transcript)
20
The Immune System
  • Provides defense from harmful foreign invaders
    (bacteria, viruses) and substances.
  • The Non-specific Immune System is the physical
    barriers your body has (mucus, skin, gastric
    juice, etc) and the inflammatory response to
    wounds.
  • The specific immune system White Blood Cells
    produce antibodies for a particular disease
    organism (antigen). The antibodies tag the
    disease organism for destruction by other white
    blood cells.

21
Homeostasis
  • Homeostasis the internal balance needed to
    remain alive.
  • Examples reflexes, glucose regulation, valves,
    respiratory cilia, water balance,

22
Disease
  • Any disruption of homeostasis
  • Examples Emphysema, HIV, Heart Attack, Stroke,
    Diabetes, Hemophilia, Cancer, ulcers.
Write a Comment
User Comments (0)
About PowerShow.com