Post on 04-Jan-2016
Muscle TissueMuscle tissue is highly vascular & highly cellular
Less matrix = more flexibilityMore blood flow = more ATP made
Elongated shapeActin & myosin – contractile myofilaments
Muscle TissueMuscle Tissue
Slide 3.64Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Function is to produce movement Three types
Skeletal muscle Cardiac muscle Smooth muscle
Muscle Tissue TypesMuscle Tissue Types
Slide 3.65Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Skeletal muscle Voluntary control Cells attach to connective
tissue Cells are striated (striped) Cells have more than one
nucleus (multinucleate)
Figure 3.19b
Muscle Tissue TypesMuscle Tissue Types
Slide 3.67Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Smooth muscle Involuntary muscle Surrounds hollow
organs Attached to other
smooth muscle cells No visible striations One nucleus per cell
(uninucleate)Figure 3.19a
Muscle Tissue TypesMuscle Tissue Types
Slide 3.66Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Cardiac muscle Found only in the heart -
Function is to pump blood (involuntary control)
Cells attached to other cardiac muscle cells at intercalated disks and split at the bifurcations
Cells are striated One nucleus per cell
Figure 3.19c
Bifurcation
Nervous TissueConsists of brain, spinal cord, nervesCarry electrical signals2 major cell types:
Neurons: generate & conduct electricityUsually nonregenerative
Neuroglia: support neurons
Brain tumors?
Tissue Repair1. Regeneration is the replacement of destroyed tissue by proliferation of the same type of cells.2. Fibrosis is the replacement of destroyed tissue by connective (scar) tissue.3. The major type of tissue repair that takes place is determined by:
a. The type of tissue injuredb. The severity of the injury
Muscle, Nervous & Tissue Repair review