Warm up 5/5 Tomorrow we will meet in Rm 151 –2 nd science room from front of the school Take the histology lab and turn to page 3. –Come to the front and get 1 microslide viewer and one microslide strip. (Groups of 2) –Look at 3 different slides. Draw pictures of the slides in the field of views provided on page 3 of the lab. –Answer questions –Must clean up by 2:00 pm

MUSCULAR SYSTEM II PP

MUSCLE STRUCTURE CONT. Ligaments connect joints Tendons connect muscle to bone When the muscle moves, the bones move, and the joint bends

MUSCULAR MOVEMENT Muscles arranged in opposing pairs and while one relaxes the other contracts flexor: contraction bends the joint extensor: contraction straightens the joint

MUSCLE FATIGUE The inability to contract the muscle due to the lack of ATP

SKELETAL SYSTEM for dummies pp RED= Important BLACK = Write Down BLUE = Don’t write down

FUNCTION Bones support muscles and organs produce red and white blood cells gives shape and structure to the body protects internal organs store minerals

SKELETON Axial –the skull, face, vertebral column, and rib cage. Appendicular –the arms and legs, pelvis, scapula, collar bone, etc bones and their associated tissues (cartilage and ligaments) make up the skeletal system to support the body

BONE STRUCTURE porous and made of proteins and minerals osteocytes –cells that make bone bone marrow – soft bone tissue that produces platelets and blood cells

BONE DEVELOPMENT develop from cartilage (tough flexible connective tissue) ossification: hardening of bone cartilage elongation at the end of bones

JOINTS place where two bones meet

Fixed: no movement between bones (ex. skull). Semimovable: limited movement (i.e. rib cage and vertebrae) Movable 1. hinge – knee and knuckle 2. pivot – skull joins the vertebral column 3. ball-and-socket – hip 4. gliding – wrist and ankle (slide over one another)

JOINT STRUCTURE cartilage between joints for cushion ligaments connect joints (bone to bone)

Quiz Tomorrow P 922 # 9, 10 (Due Tues) Look at p 929 #7. Define parts of picture 1-4. –Is this muscle elongated or contracted? (Due Tues) Problems p 922 # 5-7 Due Wednesday Physiology Study Guide Due Thursday Histology Lab (Due Friday) Exam Friday: Intervention Wed & Thur