Muscle + Nervous Tissue Flashcards
Skeletal muscle
- Long + cylindrical cells/ striated
- attach to bones and move by contracting and relaxing in response to voluntary messages from the NS
Smooth muscle
- non striated/ involuntary
- propels substances along internal passageways
- lines hollow organs to help squeeze substances through
cardiac muscle
- striated /involuntary
- lines the walls of the heart to propel blood through blood vessels to other parts of the body
- only found in myocardium
nervous tissue
Transmit electrical signals from sensory receptors to effectors
Tissue healing: regeneration
Proliferation of cells and tissue. Complete restoration of lost tissue structures
Tissue healing: repair
Proliferation of cells and tissue, and the formation of scar tissue. Tissue structure is not completely restored. E.g., too much damage, or can’t be repaired.
STRONG REGENERATIVE CAPACITY
Epithelial tissue, bone, dense irregular connective tissue, blood-forming tissue
MODERATE REGENERATIVE CAPACIT
Smooth muscle, dense regular connective tissue.
WEAK REGENERATIVE CAPACITY
Skeletal muscles, cartilage.
NO REGENERATIVE CAPACITY
Nervous tissue, cardiac tissue.
stem cells
(1) can divide over and over again to produce new cells
(2) as they divide, they can change into the other types of cells that make up the body
The image below shows a photomicrograph of tissue. What best identifies the tissue shown?
Smooth muscle tissue would function to propel substances or objects in hollow organs.