Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
What are the two main functions of the skeleton? ANS For support and muscle attachment List the 4 parts of the body protected by the skeleton. ANS heart + lungs + brain + spinal cord What is the range of movement allowed by a ball and socket joint? ANS Movement in all direction What are the two functions of the cartilage in a joint? (credit) ANS Acts as a shock absorber and reduces friction at a joint. What is the function of the synovial fluid in a joint in cartilage? (credit) ANS Reduces friction at a joint What is the function of the synovial membrane? (credit) ANS To produce synovial fluid What is the function of the tendons? ANS To attach the muscle to the bone Why are tendons inelastic? (credit) What is the range of movement in a hinge joint? ANS Movement in one plane only What is the function of the ligaments? (credit) ANS To transfer the pull of the muscle to the bone Name the two components of a bone. ANS flexible fibres and minerals What forms bone? (credit) ANS To hold the bone together at a joint ANS Living cells Why do we need a pair of opposing muscles at a joint? (credit) What is the function of the cilia? (credit) ANS When one muscle contracts it will bend the limb and when the other muscle contracts it straightens the limb. ANS To push the mucus out of the lungs. If a person takes in food that supplies them with more energy than they require what happens to them? ANS They become fat Why do we breath? ANS To absorb oxygen and release carbon dioxide List the 4 main parts of the lungs. ANS Trachea, bronchi, bronchioles and alveoli. What happens to your rib cage to allow you to inhale air into your lungs?(credit) ANS Muscles will lift your rib cage up and out which increases the volume and decreases the pressure in the lungs What is the function of the cartilage in the trachea and bronchi tubes?(credit) ANS To hold the air passages open. What is the function of the mucus in the lungs? (credit) ANS To trap dust and microorganisms What gas diffuses between the air sacs and the surrounding blood? (credit) ANS oxygen What gas diffuses between the surrounding blood and the air sacs? (credit) ANS carbon dioxide List 4 features that make the lungs efficient gas exchange structures. (credit) What is the name of the blood vessel that supplies the heart with blood? ANS Large surface area, good blood supply, thin walled alveoli and moist. ANS Coronary artery Name the 4 chambers in the heart. What does a pulse indicated? ANS Right and left atrium and right and left ventricle ANS That the blood is flowing through an artery. What is the name of the two arteries that take blood away from the heart. What is the function of the red blood cells? ANS Aorta and pulmonary artery ANS To transport oxygen to the cells Name the two veins that take blood back to the heart. What is the function of the plasma? ANS ANS to transport food to the cells and take CO2 to the lungs vena cava and pulmonary vein What is the function of the valves in the heart? What 2 substances pass from the cells to the blood capillary? ANS To stop the backflow of blood ANS CO2 + waste What 2 substances pass from the blood capillary to the cells? Why can we judge distances better with two eyes compared to using one? (credit) ANS Oxygen + glucose ANS Each eyes sends a different picture to the brain which produces a three dimensional picture. Explain the function of haemoglobin found in red blood cells. (credit) What is the function of the cornea? ANS To help it transport oxygen ANS Lets the light into the eye What is haemoglobin called when it has oxygen attached to it? (credit) What is the function of the lens? ANS Oxyhaemoglobin List 2 features of the capillary network that makes it an efficient gas exchange structure. (credit) ANS Large surface area and thin (one cell thick) What is more accurate when using two eyes compared to one? ANS Judging distances is more accurate ANS To focus light onto the retina What is the function of retina? ANS changes the light into an electrical impulse What is the function of the optic nerve? ANS carries the electrical impulse from the eye to the brain What is the function of the iris? ANS To control the amount of light entering the eye What is more accurate when using two ears compared to one? Explain how the arrangement of semicircular canals is related to their function. (credit) ANS The direction of the sound ANS set at right angles to each other to detect the movement of the head What is the function of the eardrum? Name the three parts of the nervous system. ANS passes vibrations to the ear bones ANS brain spinal cord and nerves What is the function of the middle ear bones? List the two functions of the nerves. ANS amplify and transmit the vibrations to cochlea ANS To carry information from the nerves to the CNS and from the CNS to the muscles What is the function of the cochlea? List the 3 nerves in a reflex arc. (credit) ANS changes vibrations to an electrical impulse ANS sensory nerve, relay nerve and motor nerve. What is the function of the auditory nerve? Which nerve in the reflex arc carries information from the senses to the spinal cord? .(credit) ANS carries the electrical impulse from the ear to the brain What is the function of the semicircular canals? ANS for balance ANS Sensory nerve Which nerve in the reflex arc carries information from the spinal cord to the muscles? (credit) ANS motor nerve What is the function of the cerebrum? (Credit) Why does the pulse rate increase during exercise? ANS memory / sight / sound ANS To push more blood with oxygen to the cells What is the function of the cerebellum? (credit) Why does the breathing rate increase during exercise? ANS Balance and co-ordination ANS To allow more gas exchange to occur What is the function of the medulla? (credit) List three factors that will rise less during exercise in a fit person compared to an unfit person ANS To control heart rate and breathing ANS pulse rate, breathing rate and lactic acid What causes muscle fatigue? Training improves the efficiency of what? (credit) ANS continuous repeated contraction of a muscle. What happens in a muscle cell to produce muscle fatigue? ANS Lack of oxygen and build up of lactic acid ANS Lungs and the circulation What recovery time indicates that a person is fit? ANS A quicker recovery time What form of respiration causes muscle fatigue? (credit) What happens to the recovery time when a person trains more? (credit) ANS ANS increasing training, decreases the recovery time Anaerobic respiration