Draw an outline of the human body and place the following organs in your drawing: Brain Stomach Liver Large Intestine Heart Lungs *** Identify which organ system each organ belongs in.
stomach brain lungs heart large intestine liver
Important Functions of the Human Body 1. Support – Skeletal 2. Collection and Evaluation of Information - Nervous 3. Transportation of Oxygen and Nutrients – Circulatory and Respiratory 4. Protection of Internal Organs - Skeletal 5. Obtaining Nutrients from Food - Digestive 6. Maintenance of Constant Body Temperature – Excretory and Circulatory
Organization of the Body CELL TISSUE ORGAN ORGAN SYSTEM
Cells are Specialized for a Particular Function Nerve Cell Red Blood Cells Skin Cells
Four Types of Tissue in the Human Body
1. Epithelial Tissue Glands and tissues on interior or exterior body surfaces Skin Lining of organs Protects from dehydration and physical damage Controls what enters and leaves cells in layers under it Layer can be one or a few cells thick Cells can regenerate
2. Connective Tissue A. Defend the body – White Blood Cells Macrophages – Engulf and digest microbes Lymphocytes – Make antibodies, attack virus-infected cells and cancer cells MACROPHAGES LYMPHOCYTES
B. Supports the body and connects parts Cartilage and bone of the skeletal system BONE CARTILAGE
C. Accumulate and Transport Materials Fat cells Blood cells FAT CELLS BLOOD CELLS
3. Nervous Tissue Conduct signals rapidly *Includes neurons (nerve cells) which are made of cell body, dendrites, and axons nerve = bundle of axons
4. Muscle Tissue Permits movement Contains actin and myosin filaments 3 Kinds of Muscle – Smooth, Cardiac, Skeletal SMOOTH CARDIAC SKELETAL
Organs and Organ Systems Made of combinations of the four types of tissue 11 Organ Systems in the Body 1. Cover, support or produce movement INTEGUMENTARY, MUSCULAR, SKELETAL 2. Regulate body functions ENDOCRINE, NERVOUS, REPRODUCTIVE 3. Transport and Protect CIRCULATORY, IMMUNE 4. Involved in metabolism or excretion RESPIRATORY, DIGESTIVE, EXCRETORY
What organ system is represented by the pictures? NERVOUSINTEGUMENTARYSKELETALMUSCULARCIRCULATORY
RESPIRATORY DIGESTIVE EXCRETORY
REPRODUCTIVE ENDOCRINELYMPHATIC/IMMUNE
Importance of Homeostasis Provides stable environment which is necessary for chemical reactions to occur Feedback of information maintains homeostasis The hypothalamus in brain is important in maintaining homeostasis
1. Negative Feedback - Stimulus causes a response in the body that will OPPOSE the stimulus examples : maintaining body temperature, blood pressure 2. Positive Feedback - Stimulus causes a response in the body that will increase the results of the stimulus examples: blood clotting, uterine contractions in childbirth (oxytocin released) Feedback Loops
Systems Review Manipulative Cards Finish handout for hw!