Rattle My Bones
band of fibrous connective tissue that holds bones together
What are ligaments?
involuntary muscle that is found in the walls of internal organs such as the stomach.
What is smooth muscle?
electrical signals transmitted by the nervous system
What are nerve impulses?
hormone produced by the hypothalamus that stimulates the kidneys to conserve water by producing more concentrated urine.
What is antidiuretic hormone?
either of the two upper chambers of the heart; right atrium or left atrium.
What is the atria?
light, porous inner layer of bone that contains bone marrow.
What are spongy bones?
tough connective tissue that attaches skeletal muscle to bones
What are tendons?
extend from the cell body and receive nerve impulses from other neurons
What are dendrites?
a molecule that influences processes inside the cell; activated by an enzyme triggered by non-steroid hormone binding to a receptor
What is second messenger?
either of the two upper chambers of the heart; right atrium or left atrium.
What are the arteries?
*Double Points* process in which mineral deposits replace cartilage and change it into bone.
What is ossification?
a thick protein filament involved in muscle contraction; together with actin, it forms the filaments of myofibril in muscles
What is myosin?
reversal of electrical charge across the membrane of a resting neuron that travels down the axon of the neuron as a nerve impulse.
What is action potential?
secretes thyrotropin-releasing hormone, or TRH.
What is the hypothalamus?
occurs when the walls of blood vessels relax, which increases blood flows through the vessels.
What is dilation?
allowing very limited movement, these bones at the joints are held in place by cartilage
What are partly moveable joints?
the outer protective, waterproof layer of the skin.
thin layer of light-sensing cells that covers the back of the human eye and is the location where images normally focus in the eye.
What is the retina?
condition that results in very long arms and legs and abnormally tall stature by adulthood; due to hypersecretion of growth hormone
What is gigantism?
cell debris, cholesterol, and other substances
What is plaque?
a disease in which bones lose mass and become more fragile than they should be. It also makes bones more likely to break
What is osteoporosis?
tough, fibrous protein in skin, nails, and hair.
What is keratin?
division of the peripheral nervous system; carries nerve impulses from the central nervous system to muscles and glands throughout the body.
What is motor division?
condition where not enough hormone is secreted.
What is Hypersecretion?
a type of white blood cell involved in an immune system response to a specific pathogen;
What are lymphocytes