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Unit 2A

Skeletal and Muscular Body Systems

Exoskeleton skeletal systems made up of chitin and calcium carbonate that provides protection to creatures such as insects and crustacea.
Endoskeleton skeleton of an animal (vertebrates), which is comprised of bone and cartilage.
Skeletal System makes a solid framework of bones and connective tissues to support the body. Protects the body tissues and internal organs. Anchors skeletal muscles. Primary organs are bones and joints.
Functions of Skeletal System Support and Protect, Movement, Production of red blood cells, Storage, & Homeostasis.
Axial 80 bones along the axis of the body, which protect the internal organs
Appendicular 126 bones of the appendages (arms and legs) and girdles (shoulders and pelvic) that connect them with the axial skeleton and provide support and flexibility.
Bone Tissue compact bone, spongy bone, bone marrow, and periosteum
Joints Holds the skeleton together and support movement
Ligaments Attach bone to bone and made of dense layered collagen fibers
Tendons Attach muscle to bone and made of dense layered collagen fibers
Diseases to Skeletal System Osteoporosis, Osteomalacia, Arthritis
Muscular System 640 muscles that allows movement, maintains posture, stabilizes joints, and generates heat.
Properties of Muscles Excitable, Contractible, Extensible, Elasticity, & Adaptability
Voluntary Movement Controlled consciously by a person such as speaking, walking, and writing
Involuntary Movement Controlled by the unconscious part of the brain such as heartbeat, intestine moving waste, breathing
Cardiac Muscle form the wall of the heart and controls your heartbeat, involuntary.
Smooth Muscle (visceral) weakest of all muscle tissues found in organs and perform unique functions like grinding, churning, or moving, involuntary.
Skeletal Muscle connect to the skeleton in at least one place to move parts of bones closer to each other, voluntary.
Muscle Names Location, Size, Direction, Number of Origins, Shape, Origin and Insertion.
Facia surrounds muscles and connects muscle to muscle, made of dense layered collagen fibers.
Created by: PRO Teacher dowdyp


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