Respiratory, Muscular & Skeletal Systems Specialized Tissues • What are groups of similar cells called? • What are the 4 basic types of tissues in animals? • Tissues 1. 2. 3. 4. Epithelial Connective Nervous Muscle Epithelial Tissue • Define: • Examples: • Include glands and tissues that cover internal and external body structures • Skin • Linings of blood vessels • Lining of digestive tract • Functions: • Protect tissues beneath • Absorption of gases & nutrients • Secretion of substances • Provide sensation Connective Tissue • Define: • Provides support for body and connects its parts • Characteristics come from: • The extracellular matrix • What is the extracellular matrix? • non-living material that surrounds and supports the living cells. • Examples: • Blood • Bone • Ligaments/tendons • Cartilage • Adipose (fat) • Mesenteries • What is the matrix of blood? • Plasma (55% 0f blood volume) • What are the cells of blood? • Red Blood Cells • White Blood Cells • Platelets • What is the matrix of bone? • Collagen protein • Calcium Phosphate • What are the cells of bone? • Osteocytes • What is the matrix of cartilage? • Collagen protein • Elastin fibers • What are the cells of cartilage? • Chondrocytes • Why does bone heal quickly? • Large blood supply • Why does cartilage heal slowly/not at all? • No blood supply Nervous Tissue • Define: • Examples: • Tissue that transmits nerve impulses through body • Brain • Spinal Cord • Sensory & Motor Nerves Muscle Tissue • Define: • Examples: • Tissue is made of "excitable" cells that are capable of contraction • Most abundant tissue type in most animals • Skeletal • Smooth • Cardiac Respiratory System • Function of system: • Brings about the exchange of O2 and CO2 between the blood, the air and the tissues of an organism • Relationship to cellular respiration: • Provides O2 to the cells so that glucose can be broken down/converted to ATP The Respiratory System & Metabolism • What is cellular metabolism? • The chemical processes occurring within a living cell that are necessary for the maintenance of life The Respiratory System & Metabolism, cont. • Building of larger molecules from smaller ones: • Energy is: • Anabolism • Breaking down of larger molecules to smaller: • Energy is: • Catabolism • Used • Released Structures of Respiratory System • Lungs • Main organs: • Place of gas exchange: • Other structures: • Alveoli (clusters of air sacs that look like grapes) • Trachea • Left/Right Bronchi • Bronchioles • Diaphragm Muscular System • Function of system: • To provide movement for and within the body • What are the 2 basic types of muscle action? • Voluntary • Involuntary Energy Needs of Muscle Types • What cellular organelle is found in great numbers in muscle cells? • What 2 muscle types require constant energy? • What 2 muscle types can require a rapid input of energy? • Mitochondrion • Cardiac • Smooth • Cardiac • Skeletal Body Systems & Cellular Respiration • What system provides energy? • What system takes nutrients, gases & wastes to/from cells? • What system provides gas exchange? • What system controls lungs? • What system controls the others? • Digestive • Circulatory • Respiratory • Muscular • Nervous Skeletal System • Functions: • Supports body • Protects internal organs • Provides movement • Stores mineral reserves • Site of blood cell formation Skeletal System, cont. • What is an endoskeleton? • Organisms with endoskeleton: • An internal skeleton • Mammals • Reptiles • Amphibians • Birds • Fish Skeletal System, cont. • What is an exoskeleton? • Organisms with exoskeleton: • An external skeleton • Insects • Crustaceans • Mollusks • Organisms with both: • Tortoise • Armadillo Skeletal System, cont. • Where do bones meet? • What holds 2 or more bones together? • What attaches muscle to bone? • Joints • Ligaments • Tendons