organization of the human body
Download
Skip this Video
Download Presentation
Organization of the Human Body

Loading in 2 Seconds...

play fullscreen
1 / 37

Organization of the Human Body - PowerPoint PPT Presentation


  • 103 Views
  • Uploaded on

Organization of the Human Body. Chap 46. Cell specialization. Zygote Forms three germ layers Ectoderm; outher layer, skin & nervous system Mesoderm: middle layer, muscles, bones and connective tissue Endoderm: Inner layer, organs. Germ Layers. Cell specialization. Tissue types

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 ' Organization of the Human Body' - hewitt


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
cell specialization
Cell specialization
  • Zygote
    • Forms three germ layers
      • Ectoderm; outher layer, skin & nervous system
      • Mesoderm: middle layer, muscles, bones and connective tissue
      • Endoderm: Inner layer, organs
cell specialization1
Cell specialization
  • Tissue types
    • Connective: binds and supports other structures (bones, elastins)
      • Function: gives strength to softer tissues
      • Origin: mesoderm
cell specialization cont
Cell specialization (cont)
  • Muscle
    • Function: movement
    • Origin: mesoderm
cell specialization cont1
Cell specialization (cont)
  • Nerve
    • Function: communication, coordination, information
    • Origin: ectoderm
    • Types of nervous transmission
      • Afferent: sensory
      • Efferent: motor
skeletal system
Skeletal System
  • Endoskeleton
    • Advantages
      • Flexible
      • No molting
      • Greatest support with least weight
    • Disadvantages
      • less protection than exo-
      • Depend on nervous system for protection
slide16

Skeleton Functions

    • Support
    • Muscle attachment
    • Protection: organs and CNS
    • Store minerals
    • Marrow storage
slide17

Bone development

    • Long bones
      • Develop from cartilage: Ossification
      • Remove minerals from blood
        • Calcium phosphate ions
        • Calcium carbonate ions
      • Continues throughout childhood
slide20

Bone development (cont)

    • Flat bones: cranium, sternum, jaw
      • Develop from membrane layers
      • Sutures: joints in bones
      • Bones not fused in baby: allows brain to grow
bone structure
Bone Structure
  • Diaphysis: shaft of bone
  • Epiphysis: ends of long bones
  • Epiphyseal line: growth line/plate
  • Haversian system
    • Haversian canal: channels through bones
    • Functions: delivers blood to bone, nutrients, osteocytes
  • Marrow
    • Red
      • Found: flat bones, epiphyseal portion of long bones
      • Function: RBC, WBC (erythrocytes, leucocytes)
    • Yellow
      • Found: central cavity of long bones (diaphysis)
      • Function: fat storage (in emergency may produce RBC’s
joints
Joints
  • Types
    • Hinge: elbow
    • Ball and socket: hip
    • Angular: wrist
    • Gliding: vertebrae
    • Pivotal: Atlas and Axis
      • Top 2 vertebrae that allow head rotation
  • Attachment
    • Bone to bone: ligaments
    • Muscle to bone: tendons
muscle systems
Muscle systems
  • Muscle tissue
    • Made of cells that are able to shorten
muscle fibers
Muscle fibers
  • Fibers are single cells
  • Energy provided by ATP (lots of mitochondria)
  • Bundle of fibers is a motor unit
muscle contraction videos
Muscle contraction videos
  • http://www.youtube.com/watch?v=CepeYFvqmk4
  • http://www.youtube.com/watch?v=NRzJjx3ANuE
three muscle types
Three Muscle types
  • (get notes from descriptions of pictures)
flexors vs extensors
Flexors vs Extensors
  • Flexor- pulls bone toward each other (flex)
  • Extensors- pulls bones away from each other (extend)
  • Work in opposites- each flexor has and extensor to control the range of motion
heart contractions
Heart Contractions
  • Sinoatrial node (pacemaker): in right atrium, impulse start here and causes contraction
  • Atrioventricular node: Causes ventricle contraction
  • Atria contract, then ventricles, moves right to left
ad