KINE 1P90 Lecture Notes - Lecture 2: Human Body, Organism, Homeostasis

• School: Brock University
• Department: Physical Education and Kinesiology
• Course: KINE 1P90
• Professor: Panagiota Klentrou

Document Summary

Physiology - the study of how the body works/functions (mechanistic) Explains functions in terms of meeting a bodily need: (cid:862)why do i shi(cid:448)er (cid:449)he(cid:374) i"(cid:373) (cid:272)old?(cid:863) (cid:862) to help (cid:449)ar(cid:373) up. Mechanistic approach- explains functions in terms of sequence of physical and chemical reactions: (cid:862)why do i shi(cid:448)er (cid:449)he(cid:374) i"(cid:373) (cid:272)old?(cid:863) (cid:862)te(cid:373)perature-sensitive nerve cells detect a fall in temperature. Chemical level (organization of the human body) - atoms and molecules. Cellular level- cells are the basic unit of structure and function in the body. Cells - the smallest unit able to carry out life. Cell differentiation - different cells have different specialized functions. Tissue level- third level of organization of the human body. Tissues - cells with similar structure and specialized function combine to form this. Muscle tissue (1)- specialized for contracting and generating force. Nervous tissue(2)- specialized for initiating and transmitting electrical impulses. Epithelial tissue (3)- specialized for exchanging materials between the cell and its environment.