Module 4

Levels of organisation in the human body

• Tissues

• Epithelial tissue

• Nervous tissue

• Muscle tissue

• Connective tissue

Tissues

Groups of similar cells and their extracellular products organized to perform a common function

Epithelial tissue

Covers body surfaces, lines cavities, forms glands, the internal and external lining of many organs and body tubes

Nervous tissue

Receives, transmits & integrates information to control body activities

Muscle tissue

Responsible for movement and support of body parts,
movement of materials within the body

3 Types of Muscle Tissue

1. Skeletal: helps move body segments

2. Smooth: helps move food along the digestive tract

3. Cardiac: Heart beat helps move blood around the body

Connective tissue

Protects other tissues, storage of fats and minerals, binds together other tissues, support organs structurally and functionally

4 Types of Connective tissue

• Loose

• Bone

• Cartilage

• Fibous

The cells of bone tissue

Muscle

Made up of a large number of bundles (fascicles) of muscle fibres (muscle cells), surrounded by connective tissue

Module 4: Lecture 3, Muscles in Action

Type 1:

Slow oxidative, slow twitch, low force, fatigue resistant

Type IIA:

Fast oxidative, Intermediate twitch and fatigability

Type IIB:

Fast Glycolytic, Fast twitch, more force, fatigues quickly

Types of contraction

• Concentric – muscle shortening
  during the contraction

• Isometric – whole muscle length stays the same
  (or very close to) during the contraction

• Eccentric – muscle lengthens
  during the contraction

Module 4: Lecture 4,

7 Function of Skeletal System

1. Support

2. Protection

3. Anchorage

4. Minerals

5. Blood cell production

6. Triglycerides

7. Hormone