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Body Systems7th
HMS Hawks
| Question | Answer |
|---|---|
| Alveoli | a thin-walled air sac that occurs in large numbers in each lung and allows oxygen to enter and carbon dioxide to leave the blood |
| Aorta | a large artery which takes blood away from the left side of the heart and carries it to other arteries |
| Artery | a blood vessel taking blood from the heart to the tissues of the body |
| Autonomic Nervous System | the nervous system formed of ganglia linked to the spinal column, which regulates the automatic functioning of the main organs of the body such as the heart and lungs |
| Axon | a nerve fiber that sends impulses from one neuron to another, linking with the dendrites of the other neuron |
| Bladder | the organ in which urine is stored before being passed out of the body. |
| Bone Marrow | soft tissue inside bones |
| Bones | a hard substance of which the parts of the skeleton are formed |
| Bronchial Tubes | a narrow tube branching from a main air tube or bronchus in a lung |
| Calorie | a unit of measurement of heat or energy. |
| Carbohydrate | an organic compound composed of carbon, hydrogen and oxygen, e.g. sugars, cellulose and starch |
| Cardiac Muscle | the muscle of the heart wall |
| Cartilage | thick connective tissue which lines the joints and acts as a cushion and which forms part of the structure of an organ |
| circulatory system | he system of arteries and veins which, together with the heart, make the blood circulate around the body |
| contract | to become smaller in volume or length |
| dendrite | a branch of a nerve cell, which receives impulses from axons of other nerve cells at synapses |
| diaphragm | a thin layer of tissue stretched across an opening, especially the flexible sheet of muscle and fibre which separates the chest from the abdomen, and moves to pull air into the lungs in respiration |
| excrete | to pass waste matter out of the body |
| fat | a white oily substance in the body of mammals, which stores energy and protects the body against cold |
| force | the capacity to do work or cause physical change |
| heart | a muscular organ that pumps blood round an animal’s body |
| homeostasis | he tendency of a system to resist change and maintain itself in a state of equilibrium |
| joint | a place at which two or more things are joined together |
| keratin | a fibrous protein that gives strength and elasticity to hair, nails, feathers and hooves |
| kidney | an organ in vertebrates that regulates and filters waste for excretion |
| larynx | he part of the respiratory tract at the entrance to the windpipe that, in humans and some other vertebrates, contains vocal cords and is the organ of voice production |
| cellular respiration | Cellular respiration is, in its broadest definition, the process in which the chemical bonds of energy-rich molecules such as glucose are converted into energy usable for life processes. All forms of life except viruses carry out respiration. |
| compact bone | Hard, dense bone. Compact bone makes up 80 percent of the human skeleton. |
| excretory system | The systems that excrete wastes from the body. The principal organs of the excretory system are the kidneys, ureters, urethra, and urinary bladder. |
| extensor muscle | a skeletal muscle whose contraction extends or stretches a body part |
| flexor muscle | a muscle that serves to flex or bend a part of the body. |
| integumentary system | the skin and its appendages |
| involuntary muscle actions | Any of the smooth muscles, except for the cardiac muscle, not under control of the will. |
| ligament | a sheet or band of tough, fibrous connective tissue that connects bones or cartilages at a joint or holds organs in place |
| mouth | the part of an animal’s body where food is taken in |
| muscle | an organ that contracts to make part of the body move |
| Science-Dictionary.com nerve | a bundle of fibres in a body which take impulses from one part of the body to another, each fibre being the axon of a nerve cell |
| neurotransmitter | a chemical substance which transmits nerve impulses from one neuron to another |
| nutrient | a constituent of food which is necessary to provide energy or to help the body grow, repair and maintain itself, e.g. a protein, fat or vitamin |
| peripheral nervous system | all the nerves in different parts of the body that are linked and governed by the central nervous system. |
| pharynx | the part of the throat between the mouth and the oesophagus |
| protein | a nitrogen compound formed by the condensation of amino acids that is present in and is an essential part of living cells |
| receptor cell | a cell in a nerve ending which senses a change such as cold or heat in the surrounding environment or in the body and reacts to it by sending an impulse to the central nervous system |
| red blood cell | a blood cell which contains haemoglobin and carries oxygen |
| respiratory system | * a series of organs and passages that take air into the lungs and exchange oxygen for carbon dioxide Related Terms aspergillosis respiration This content can be found on the following page: Science-Dictionary.com/definiton/respiratory-system.h |
| response | a reaction to a stimulus |
| skeletal muscle | a muscle attached to a bone, which makes a limb move |
| smooth muscle | a type of muscle found in involuntary muscles. |
| stimulus | something that makes an organism or organ react or respond, e.g. light, heat or noise |
| tendon | * a strip of connective tissue that attaches a muscle to a bone |
| trachea | the tube through which air travels from the throat to the lungs |
| tract | a system of internal organs |
| ureter | one of a pair of ducts through which urine flows from the kidneys to the bladder in mammals or to the cloaca in lower vertebrates |
| Science-Dictionary.com urethra | the tube in humans and other mammals through which urine passes from the bladder out of the body |
| urine | a liquid secreted as waste from an animal’s body |
| white blood cell | a blood cell containing a nucleus, that is formed in bone marrow and creates antibodies |
| work | energy used when something is forced to move |
Created by:
chrishenderson
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