muscular system laguna university STEM 12 bubukal santa cruz laguna

1. The Muscular System

2. •made up of
over 600
different
muscles
Muscular
System?

3. •consists of two
different types
of tissue:
–connective
tissue
–muscle tissue
Muscular
System?

4. Functions of the Muscular
System?1.To create
movement by
working with bones,
ligaments, and
tendons.

5. Functions of the Muscular
System?2. To move food
through the
digestive system.

6. Functions of the Muscular
System?3. To move blood
through the body by
pumping the heart.
4. To produce heat.

7. Functions of the Muscular
System?5. To provide
protection to inner
organs.

10. What are the 2 Different
Types of Muscle? •Voluntary:
•Muscle action that is
under your control.
•Most skeletal movement
is voluntary.

11. What are the 2 Different
Types of Muscle? •Voluntary:
Examples:
•Walking, talking,
running, writing,
jumping, stretching

12. What are the 2 Different
Types of Muscle?•Involuntary
:•Muscle action that is NOT
under your control.
•Cardiac and smooth
muscle are involuntary.

13. What are the 2 Different
Types of Muscle?•Involuntary
:–Examples:
–Heart beating, food moving
through the digestive tract,
reflexes (skeletal)

14. 1.Skeletal Muscle:
•Attached to the bones
for movement. Helps
protect your inner
organs.
What are the Types of
Muscle?

15. 1.Skeletal Muscle:
•Attached to the bones
for movement. Helps
protect your inner
organs.

16. 2.Cardiac Muscle:
•Special type of muscle
found only in your heart.
This type of muscle
causes your heart to
beat.

17. 3.Smooth Muscle:
•Lines your digestive
tract and blood vessels.
Smooth muscle moves
food and blood through
your body.

20. Tendons
•Tendons attach muscles
to bones.
•Tendons are made up of
strands of flexible
connective tissue.

21. Tendons
•When a muscle contracts
(gets shorter) the tendon
pulls on the bone.

22. Muscles Work in Pairs
•Muscles work in pairs to
cause smooth, controlled
movements.

23. Muscles Work in Pairs
•Many of our basic
movements are the result
of pairs of muscles
bending and
straightening.

24. Muscles Work in Pairs
•Flexor - a muscle that
contracts to bend a part
of the body.
•Extensor – a muscle that
contracts to straighten a
part of the body.

27. Flexors and extensor
always work opposite
of one another.

28. PARTS OF
MUSCLE

29. myofibril

30. Myofibrils are cylindrical
structures that extend
along the complete length
of each muscle cell.

31. muscle fiber

32. Muscle fibers are the
cells or basic building
block of the muscle.

33. sarcolemma

34. The sarcolemma is a
specialized cell
membrane which
surrounds striated
muscle fiber cells.

35. fascicle

36. fascicle is a bundle of
skeletal muscle fibers
surrounded by a type of
connective tissue.

37. muscle

38. muscle

39. Muscle is the tissue of
the body which primarily
functions as a source of
power.

40. perimysium
epimysium
endomysium

41. epimysium allows a
muscle to contract and
move powerfully while
maintaining its structural
integrity.(connective tissue)

42. fascicle is protected by a
middle layer of connective
tissue called
the perimysium.

43. The endomysium contains
the extracellular fluid and
nutrients to support the
muscle fiber.

44. sarcomere
myofilament

45. A sarcomere is the basic
unit of striated muscle
tissue. It is the repeating
unit between two Z lines.

46. actinmyosin

47. Stages of Death
1.Pallor Mortis – occur
due to lack of capillary
circulation in the body

49. 2. Algor Mortis –
reduction of body
temperature

50. 3. Rigor Mortis –
stiffness caused by
changes in muscles after
death

52. 4. Livor Mortis – bluish
dicoloration