Biology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Integumentary system | serves as a barrier against infection and injury, helps to regulate body temperature, removes waste products from the body, and provides protection against ultraviolet radiation from the sun
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| Epidermis | outer layer of the skin
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| Dermis | innermost layer of the skin
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| Subcutaneous layer | fat cells beneath the skin
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| Keratin | tough fibrous protein found in skin
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| Melanin | dark brown pigment found in skin
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| Sebaceous gland | produce an oily secretion called sebum that spreads out along the surface of the skin and helps to keep the epidermis flexible and waterproof
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| Skeletal system | supports the body, protects internal organs, provides for movement, stores mineral reserves, and provides a site for blood cell formation
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| Cartilage | strong connective tissue that supports the body and is softer and more flexible than bone
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| Ligament | strip of tough connective tissue in a joint that holds bones together
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| Tendon | tough connective tissue that joins skeletal muscles to bones
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| Tendonitis | inflammation of a tendon from overuse
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| Arthritis | inflammation and stiffness of the joints
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| Osteoporosis | condition in which the bones become brittle and fragile from the loss of tissue
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| Joint | place where one bone attaches to another
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| Periosteum | tough layer of connective tissue that surrounds bones
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| Compact bone | thick dense layer beneath the periosteum
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| Spongy bone | less dense tissue found inside the outer layer of compact bones
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| Bone marrow | soft tissue inside cavities within bones; 2 types are yellow and red
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| Muscular system | tissue that controls the internal movement of materials in the body, as well as external movement of the entire body or body parts
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| Smooth muscle | usually not under voluntary control and can function without nervous stimulation
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| Cardiac muscle | found in the heart
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| skeletal muscle | attached to bones and responsible for voluntary movements such as typing or dancing
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| Actin and myosin | proteins that mainly make up the thin filaments in striations in skeletal muscle systems
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| Nervous system | controlas and coordinates functions throughout the body and responds to internal and external stimuli
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| Neuron | cells that transmit electrical signals (impulses)
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| Impulse | electrical messages carried by the central nervous system
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| Cell body | largest part of a neuron which contains the nucleus and the cytoplasm
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| Dendrites | short branched extensions from the cell body that carry impulses from other neurons toward the cell body
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| Axon | long fiber that carries impulses away from the cell body
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| Myelin | insulating membrane that surrounds the axon
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| Synapse | location where a neuron can transfer an impulse to another cell
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| Neurotransmitter | chemicals used by a neuron to transmit an impulse across a synapse to another cell
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| Central Nervous system | relays messages, processes information, and analyzes information
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| Brain | main switching area of the central nervous system
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| Spinal cord | main communication link between the brain and the rest of the body
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| Meninges | three layers of connective tissue wrapped around the brain and spinal cord
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| Cerebrum | largest and most prominent region of the brain...site of intelligence, learning, and judgement
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| Cerebellum | second largest region of the brain located in the back of the skull...coordinates and balances the actions of the muscles
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| Brain stem | located just beneath the cerebellum, connects the brain and spinal cord
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| Thalmus | receives messages from the sense organs and relays the information to the brain
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| Hypothalmus | control center for hunger, thirst, fatigue, anger, and body temperature
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| Pituitary gland | gland in the base of the skull that secretes 9 hormones that regulate many body functions
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| Sensory Neurons | ...
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| Interneuron | ...
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| Motor Neuron | ...
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| Meningitis | ...
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| Peripheral Nervous System | ...
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| Autonomic Nervous System | ...
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| Somatic division | ...
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| Sympathetic division | ...
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| Parasypathetic division | ...
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