ss chapter 13.2

Chapter 13Human Life and Health

Support Systems

Chapter 13Human Life and Health

Support Systems GEE Science

Summer RemediationMr. Nash

Donnie Bickham Middle SchoolRoom 204

GEE ScienceSummer Remediation

Mr. NashDonnie Bickham Middle School

Room 204

Support SystemsSupport Systems

Made of: Skin Muscles Bones

Made of: Skin Muscles Bones

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Support SystemsSupport Systems

Skin: Holds us together Prevents fluid loss Serves as a barrier from invaders Identifies us by fingerprints

Skin: Holds us together Prevents fluid loss Serves as a barrier from invaders Identifies us by fingerprints

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Support SystemsSupport Systems

Bones: Provide a structural framework Hold us up Provide a surface for muscle attachment

Bones: Provide a structural framework Hold us up Provide a surface for muscle attachment

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Support SystemsSupport Systems

Muscles: Allow us to move Some movements are involuntary

Heart beating, respiration Some movements are voluntary

Moving body parts

Muscles: Allow us to move Some movements are involuntary

Heart beating, respiration Some movements are voluntary

Moving body parts

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Integumentary SystemIntegumentary System

Integumentary system is composed of the skin.

Provides protection from injury, prevents dehydration, controls body temperature and excrete some wastes through sweating.

Integumentary system is composed of the skin.

Provides protection from injury, prevents dehydration, controls body temperature and excrete some wastes through sweating.

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Integumentary SystemIntegumentary System

Skin is composed of two main layers: Epidermis Dermis

Skin is composed of two main layers: Epidermis Dermis

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EpidermisEpidermis

Outer layer of skin, that is exposed to the environment.

Several cell layers thick to provide a protective barrier against the environment.

Outer layer of skin, that is exposed to the environment.

Several cell layers thick to provide a protective barrier against the environment.

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DermisDermis

Lies below the epidermis containing several structures. Hair Follicles

Each contains one hair Sebaceous glands

Secrete oils to lubricate skin and hair Sweat Glands

Release wastes and water to cool the body

Lies below the epidermis containing several structures. Hair Follicles

Each contains one hair Sebaceous glands

Secrete oils to lubricate skin and hair Sweat Glands

Release wastes and water to cool the body

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Muscular SystemMuscular System

Works together with the nervous system and the skeletal system.

Three Types of Muscle: Skeletal Smooth Cardiac

Works together with the nervous system and the skeletal system.

Three Types of Muscle: Skeletal Smooth Cardiac

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Skeletal MuscleSkeletal Muscle

Most muscle tissue. Attached to the bones of the skeleton. Voluntary muscles

Meaning you have to think about moving them.

Most muscle tissue. Attached to the bones of the skeleton. Voluntary muscles

Meaning you have to think about moving them.

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Smooth MusclesSmooth Muscles

Found in internal organs Found in the inside lining of blood

vessels Involuntary muscle

No conscious control

Found in internal organs Found in the inside lining of blood

vessels Involuntary muscle

No conscious control

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Cardiac MuscleCardiac Muscle

Only found in the heart Designed to withstand many

contractions without getting fatigued.

Only found in the heart Designed to withstand many

contractions without getting fatigued.

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Skeletal SystemSkeletal System

Comprised mostly of bones Bones are mostly calcium phosphate (Ca2PO4) Bones meet at joints

Ball and socket joints have free movement Hinge joints only move in one direction

Cartilage is flexible and attached to bones. Human embryos are cartilage and then turn into

bones.

Comprised mostly of bones Bones are mostly calcium phosphate (Ca2PO4) Bones meet at joints

Ball and socket joints have free movement Hinge joints only move in one direction

Cartilage is flexible and attached to bones. Human embryos are cartilage and then turn into

bones.

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ASSIGNMENTASSIGNMENT

Complete questions from Section B ONLY in your notebooks.

Complete questions from Section B ONLY in your notebooks.

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