TISSUES AND MOTORS

1. OTHER TISSUES AND
MOTOR UNIT
Lesson 5

2. OTHER TISSUES ASSOCIATED WITH
BONES, JOINTS AND MUSCLES…
Fascia
 another form of fibrous connective
tissue of the body that covers, connects, or
supports other tissues
 a band or sheet of connective tissue,
primarily collagen, beneath the skin that
attaches, stabilizes, encloses, and
separates muscles and other internal organ

3. FASCIA

4. OTHER TISSUES ASSOCIATED WITH
BONES, JOINTS AND MUSCLES…
Bursa
 fluid-filled, saclike that functions as a
gliding surface to reduce friction between
moving tissues of the body
 a saclike structure that contains bursa
fluid and protects muscle, tendon,
ligament, and other tissues as they cross
the bony prominences

6. NORMAL BURSA VS
INFLAMED BURSA

7. MOTOR UNIT
 A motor unit is defined as a motor nerve
and all the muscle fibers it supplies
 The structural parts of the motor unit are
the motor nerve and the muscle fiber
 All the motor units together are referred to
as the body’s neuromuscular system

8. MOTOR UNIT
 A nerve impulse travels from the spinal
cord (or brain) to a dendrite of a spinal
nerve, from the dendrite to the nerve’s cell
body, and from the cell body over the
nerve’s axon to the axon’s end brushes
(motor end plate), where a chemical is
released as the synapse

10. MOTOR UNIT
 As the impulse passes from nerve to
muscle, calcium is released from the
sarcoplasmic reticulum and transverse
tubules within the muscle fibers, two
structures closely allied with the actin and
myosin protein filaments

13. Thank you