chapter 12 part a l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Chapter 12, part A PowerPoint Presentation
Download Presentation
Chapter 12, part A

Loading in 2 Seconds...

play fullscreen
1 / 15

Chapter 12, part A - PowerPoint PPT Presentation


  • 240 Views
  • Uploaded on

Chapter 12, part A Muscles About this Chapter Muscle types What muscles do How muscles contract Contraction to locomotion Roles of smooth muscles Muscles Contract! Generate motion Generate force Generate heat Support Muscle Types Cardiac – heart Smooth – internal organs

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 'Chapter 12, part A' - adamdaniel


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
about this chapter
About this Chapter
  • Muscle types
  • What muscles do
  • How muscles contract
  • Contraction to locomotion
  • Roles of smooth muscles
muscles
Muscles
  • Contract!
  • Generate motion
  • Generate force
  • Generate heat
  • Support
muscle types
Muscle Types
  • Cardiac – heart
  • Smooth – internal organs
  • Skeletal – "voluntary"
    • Attach to bone
    • Move appendages
    • Support body
    • Antagonistic pairs
    • Flexors
    • Extensors

PLAY

Animation: Muscular System: Anatomy Review: Skeletal Muscle Tissue

muscle types5
Muscle Types

Figure 12-1: Three types of muscles

skeletal muscle anatomy
Skeletal Muscle Anatomy
  • About 40% body mass
  • Muscle fibers – cells
  • Fascicle – bundle
  • Motor unit
  • Muscle
  • sheath
  • Attach to tendons (which attach to bone)
skeletal muscle anatomy7
Skeletal Muscle Anatomy

Figure 12-3a-1: ANATOMY SUMMARY: Skeletal Muscle

skeletal muscle anatomy8
Skeletal Muscle Anatomy

Figure 12-3a-2: ANATOMY SUMMARY: Skeletal Muscle

muscle fiber structure
Muscle Fiber Structure
  • Multiple nuclei
  • Sarcolemma
  • T-tubules
  • Sarcoplasmic reticulum
  • Sarcoplasm
    • Mitochondria
    • Glycogen & ions
    • Myofibrils
muscle fiber structure10
Muscle Fiber Structure

Figure 12-3b: ANATOMY SUMMARY: Skeletal Muscle

muscle fiber structure11
Muscle Fiber Structure

Figure 12-4: T-tubules and the sarcoplasmic reticulum

myofibrils site of contraction
Myofibrils: Site of Contraction
  • Actin – "thin fibers"
  • Tropomysin
  • Troponin
  • Myosin – "thick fibers"
  • Tinin – elastic anchor
  • Nebulin – non-elastic
myofibrils site of contraction13
Myofibrils: Site of Contraction

Figure 12-3c-f: ANATOMY SUMMARY: Skeletal Muscle

sarcomere organization of fibers
Sarcomere: Organization of Fibers
  • Z disks
  • I band
  • A band
  • H Zone
  • M line
  • Titin
  • Nebulin

Figure 12-5: The two- and three-dimensional organization of a sarcomere

sarcomere organization of fibers15
Sarcomere: Organization of Fibers

Figure 12-6: Titin and nebulin