Warm up 5/5• Tomorrow we will meet in Rm 151

– 2nd 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 10-14– Must clean up by 2:00 pm

MUSCULAR SYSTEM IIPP. 920-922

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 SYSTEMfor dummies

pp 911-916

RED= ImportantBLACK = 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