Download Lesson 7 locomotion.notebook

Lesson 7 locomotion.notebook
May 23, 2017
Aim: What is the purpose and structure of the skeletal system?
Hw complete worksheet distributed in class. Test Thursday 5/25
1. Correct hw.
2. Review Finish worksheets.
3. Purpose and structure of skeletal system. May 27­11:23 AM
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May 22­1:08 PM
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Lesson 7 locomotion.notebook
May 23, 2017
1. Review: Go over worksheet. 2. The Locomotive system purpose: Allows organisms to escape from predators and find food. It is composed Bones, cartilage, Joints, ligaments tendons and muscles .
May 27­10:37 AM
Structure of Locomotive system in vertebrates: (pg. 921­928)
1. Bones are networks of cells and protein fibers surrounded by calcium salts. Within bones is bone marrow.
Bone function: « form the endoskeleton to support the body, « protect internal organs, « allow movement, « store minerals and « are the site for blood cell formation.
Just so you know human body has 206 bones about 26 in each foot . About 639 skeletal muscles. The skeleton of a new born baby is made of cartilage. It does not contain blood vessels. (Seven months latter the process of ossification starts.) May 27­11:36 AM
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Lesson 7 locomotion.notebook
May 23, 2017
2 . Joints: Place where two bones meet. Classified as: ­Immovable (like the ones in the skull)
­Slightly movable (between vertebrae)
­Freely movable permit movement in one or more directions. (Wrist, ankle)
May 20­8:33 AM
3. Ligaments: attach 2 adjacent bones.
May 20­8:38 AM
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Lesson 7 locomotion.notebook
May 23, 2017
4. Tendons: Tissue that attaches muscles to bones
May 20­8:39 AM
• 5. Muscles: Tissue that contracts (due to elastic proteins in their cell membrane) There are three types of muscular tissue: • ­ Skeletal muscle: Attached to bones by tendons. Pulls bones in opposite directions (flexor and extensor muscles)
­Smooth muscle ­ involuntary contraction except the bladder (i.e. blood vessel, intestines,etc) ­ Cardiac muscle found in the heart.
May 21­11:02 AM
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Lesson 7 locomotion.notebook
May 23, 2017
May 21­10:59 AM
Aim: Disorders of the Locomotive system and comparison of locomotion in different animals
HW. Study for test
1. Fractures:
Or broken bones. Can be ­open fracture­the bone sticks out of the skin or ­closed fracture ­the bone stays under the skin.
2. Sprains: Tearing or stretching of the ligament caused by a sudden pull or twist. Swelling might make motion of the joint painful and restricted.
3. Hernias:
Bulging in the wall of a muscular organ due to weakness in the muscle.
4. Arthritis
Inflammation of the joints making them stiff.
­Osteoarthritis caused by the wear an tear
of the cartilage at the joints
­Rheumatoid arthritis Joints become so stiff that
cause deformation of the normal position of the bones
Cortisone is a medication used to treat it.
5. Tendonitis
An inflammation of the tendon at the bone junction
caused by extensive use.
May 21­11:19 AM
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Lesson 7 locomotion.notebook
May 23, 2017
http://www.discoveryeducation.com/
May 27­11:02 AM
Organism
Protozoans Unicellular animals
Organs /structures
Type of locomotion Ameba (pseudopods)
Cytoplasmic (amoeba) Swimming­ drifting
Paramecium (cillia) (ciliated and flagelated)
Euglena (flagellum)
Hydra (cnidarians)
Cells interacting with hydrostatic pressure. They are sessile, but contract and move tentacles to trap food. Round worms
Muscles contract and Seatae, muscles see expand, they interact with fig. 27­16 pg 697 setae to burrow. Insects
Muscles controlled by nervous system interact with exoskeleton (chitin)
See figure on pg 718
• Can fly or walk
• At each joint different muscles either flex (bend) or extend (straighten) the joint. May 23­9:22 AM
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Lesson 7 locomotion.notebook
May 23, 2017
May 20­8:16 AM
May 24­9:47 AM
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