Systems of Human Body

• Human Skeleton is the internal framework of our body.
• Axial and Appendicular Skeleton are the two divisions of Skeletal System.
• Integumentary System is the external covering of our body and protect it from many threats.
• The skin has three layers - Epidermis, Dermis, and Hypodermis.
• The dermis is located beneath the epidermis
• Musculoskeletal gives the people ability to move using bones and muscles.
• Muscular System fines movement with the bones to maintain our posture.
• Smooth, Cardiac, and Skeletal are the types of muscle tissues.
• Joint is the point where two or more bones meet.
• A cartilage is a connective tissue but softer and much more flexible than the bone.
• The tendon is a tough band of fibrous connective tissues that attach muscle to bone
• Hypo Dermis is composed of connective tissues that stores fats and helps the body in retaining heat.
• Sweat Glands are small tubular structures that produces sweat.
• Hair Root is the hair below the surface of skin.
• Hair Shaft is the visible part of hair in the skin.
• Integumentary serves as a barrier from the outside environment.
• The circulatory system distributes nutrients, oxygen, and other essential substances to all parts of the body.
• Circulatory System removes carbon dioxide and other waste materials from differents parts of the body.
• The parts of Circulatory System is heart, blood vessels, and blood.
• The heart is about the size of a clenched fist.
• The heart is a muscular organ that pumps blood around the body.
• The heart is enclosed in a protective sac called

  pericardium that enables the heart to

  smoothly contract and relax.
• The chambers of heart is atria and ventricles.
• The upper chamber of heart is atria while the lower chamber of heart is ventricles.
• Blood vessels are tubes serve as passageways for blood.
• Arteries carry blood away from the heart.
• Veins carry blood toward the heart
• The smallest blood vessels are capillaries.
• Breathing is a body mechanism performed by respiratory system.
• Pharynx is a tube that is connected both nose and mouth acts as a passageway for food and air.
• Found at the lower end of pharynx and serves as your voice box is the Larynx.
• Trachea: Prevents dusts and other things entering from the lungs.
• Epiglottis: It blocks away the things entering the trachea.
• Digestive System - organs that works together to get nutrients from the food you eat.
• Mouth: Is where the digestion begins with.
• Esophagus: Muscular tube extending from the pharynx to the stomach.
• Stomach: Secretes acid and enzymes to break down the food.
• Brain: The organ that controls the body's activities.
• Cerebrum: Biggest part of the brain.
• Brain Stem: Found at the base of the brain that connect brain to spinal cord, controls commonly daily activities like breathing,heartbeat and digestion.