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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
Skeletal: helps move body segments
Smooth: helps move food along the digestive tract
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
Support
Protection
Anchorage
Minerals
Blood cell production
Triglycerides
Hormone