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body systems

QuestionAnswer
Basic unit of skeletal system Bone
Parts of skeletal system Bones, cartilage, ligaments, joints
Muscle types Skeletal, cardiac, smooth
Voluntary muscle Skeletal muscle
Involuntary muscles Cardiac and smooth
Pathway of oxygen Nose → pharynx → larynx → trachea → bronchi → lungs → alveoli
Gas inhaled Oxygen
Gas exhaled Carbon dioxide
Where digestion begins Mouth
Bolus A ball of chewed food mixed with saliva
Small intestine function Absorbs nutrients
Large intestine function Absorbs water and forms waste
Three blood vessels Arteries, veins, capillaries
Arteries carry blood Away from the heart
Veins carry blood Toward the heart
Four heart chambers Right atrium, right ventricle, left atrium, left ventricle
Dendrites Receive signals
Axons Send signals
Melanocytes Cells that produce melanin
Tattoo layer Dermis
Three layers of skin Epidermis, dermis, hypodermis
Epidermis renewal time About 3–4 weeks
Created by: user-2028696
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