unit 1 body organization and homeostasis n.
Download
Skip this Video
Download Presentation
Unit 1: Body Organization and Homeostasis

Loading in 2 Seconds...

play fullscreen
1 / 27

Unit 1: Body Organization and Homeostasis - PowerPoint PPT Presentation


  • 102 Views
  • Uploaded on

Unit 1: Body Organization and Homeostasis. Tamalpais High School Honors Physiology. Hippocrates. Greek physician born in 460 BC “Hippocratic Oath” Today Hippocrates is known as the "Father of Medicine". What exactly will we study in physiology?. Anatomy vs. Physiology

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Unit 1: Body Organization and Homeostasis' - olga-sharpe


Download Now 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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
unit 1 body organization and homeostasis

Unit 1: Body Organization and Homeostasis

Tamalpais High School

Honors Physiology

hippocrates
Hippocrates
  • Greek physician born in 460 BC
  • “Hippocratic Oath”
  • Today Hippocrates is known as the "Father of Medicine"
what exactly will we study in physiology
What exactly will we study in physiology?
  • Anatomy vs.
  • Physiology
  • STRUCTURE vs. FUNCTION
human body orientation
Human Body Orientation
  • Body directional planes
  • Body cavities
  • Body regions
  • Why?
body directional planes
Sagittal

Midsagittal

Frontal (aka Coronal)

Transverse

Body Directional Planes

Fig 1.21

body regions
Body Regions

Fig. 1.24

human body orientation1
Anatomical position

Superior vs. Inferior

Medial vs. Lateral

Distalvs. Proximal

Deep vs. Superficial

Ipsilateralvs.Contralateral

Human Body Orientation

Fig. 1.20

homeostasis

Fig 1.7

Homeostasis
  • The body’s ability to maintain a stable internal environment
    • examples: human body temperature, water balance, salt/ion balance, oxygen/CO2 balance, blood pH, etc
gross vs fine anatomy
Gross anatomy

Fine anatomy

involves cells and tissues

Histology = study of tissues

Gross vs. Fine Anatomy
histology pathology
Histology:

The study of tissues that compose the body

Pathology:

the study of disease

Histology & Pathology
tissues
Tissues
  • Cells organize into tissues
    • Tissue = Cells + extracellular matrix (EM)
      • Nonliving
      • Made by the cells

Fig. 5.24

4 main tissue types
4 Main Tissue Types

1.Epithelial tissue

  • Protective covering
  • One “free” side
  • Other side: basement membrane
  • Tightly packed, little EM
  • Classified according to shape and # of layer of cells

Fig. 5.6

4 main tissue types1
4 Main Tissue Types

Fig. 5.4

  • Epithelial cell # of layers:
    • Simple – one layer
    • Stratified – two or more layers
  • Epithelial cell shape:
    • Squamous - flat
    • Cuboidal – cube
    • Columnar – tall, elongated
  • What would simple cuboidal epithelial

tissue look like?

4 main tissue types2
4 Main Tissue Types

2. Connective Tissue

  • Lots of EM
  • Binds structures, provides support and protection, fills spaces, stores fat, produces blood cells, and protects against infections

Figs 5.21 & 5.24

4 main tissue types3
4 Main Tissue Types
  • Types of Connective Tissue:
    • LooseCT– under most layers of epithelium
    • Adipose – stores fat
    • Dense CT – very strong but stretchy; tendons & ligaments
    • Bone
    • Blood
    • Cartilage
      • Hyaline
      • Elastic
      • Fibrocartilage

Figs 5.26 & 5.27

4 main tissue types4
4 Main Tissue Types

3. Muscle Tissue

  • Skeletal muscle
  • Cardiac muscle
  • Smooth muscle

Figs 5.28, 29, and 30

4 main tissue types5
4 Main Tissue Types

4. Nervous tissue

  • Communication
  • Example cells include neurons (nerve cells)

Fig. 5.31

major chemical elements in the body
65% Oxygen (O2)

18.5% Carbon (C )

9.5% Hydrogen (H)

3.2% Nitrogen (N)

Total O,C,H, & N = approx 96% of the body by weight

Organicsubstances contain both C & H

The rest are inorganicsubstances

electrolytes = inorganic substances that dissolve in water

Major Chemical Elements in the Body
electrolytes
Electrolytes
  • Electrolyte: any substance containing free ions that make the substance electrically conductive
  • Examples: Na+, Cl-, Ca2+, K+,
  • Why are they important?
trace elements
Trace Elements
  • A trace element
    • needed in very small ( i.e. “trace”…) amounts
    • crucial to human survival
  • Examples
    • iron (Fe) - part of hemoglobin molecule
    • zinc (Zn) – in several enzymes
    • copper (Cu) – bone and melanin development
    • iodine (I ) – synthesis of thyroid hormones
human body systems
Human Body Systems

1. Circulatory (cardiovascular)

2. Immune

3. Nervous & Senses

4. Digestive

5. Muscular

6. Skeletal

7. Integumentary

8. Endocrine

9. Respiratory

10. Excretory

11. Reproductive