Amiddle-aged client with a 30-year history of smoking was diagnosed with lung cancer. a health history revealed previous exposure to air pollution, asbestos, and radiation. which factor most likely had the greatest impact on development of the lung cancer?

Asbestos will most likely had the greatest impact on the development of lung cancer.

Explanation:

RISK FACTORS FOR LUNG CANCER:

Tobacco smoke : Cigar smokers & Pipe smokers mostly causes lung cancer.Smoking low tar  cigarette also increases lung cancer risks. People who consumes menthol cigarettes also have an equal risks because menthol is inhaled deeply.Radon exposure : Radon is naturally occurring radioactive gas  that cause from the uranium breakdown in rocks and soils. For eg. Homes & other buildings in United states also have higher radon levels.Asbestos exposure : People  who work with asbestos ( i.e. mills, mines, textile plants & shipyards) are more likely die of lung cancer. When they were exposed  to large quantity of asbestos,they develop mesothelioma ( cancer of pleura).Consumption of dietary supplements : Smokers who take beta carotene supplements had an increasing risk of lung cancer.Second hand smoke : If a person does not smoke, but if he inhale  or take breath in the smoke of others, it can increase the risk of developing lung cancer. It is thought to cause more than 7000 deaths each year from lung cancer.

TREATMENT OF LUNG CANCER :

TherapyTargeted TherapyCombination of these treatments

Muscles in the body us with a lot of things for example, if i wanted to lift a heavy box and had no muscle i would just collapse where i was because of the fact muscles hold us together. overall they are 650 muscle in the human body, all of them have different purposes and ways to keep us together. there are three types of muscle in the body skeletal, smooth, and cardiac muscle. skeletal muscle are attached to the bone and with movement. smooth muscle, this is found in the wall of our organs, such as our stomach, this muscle with movement   as well, without this muscle, we would only be allowed to eat small amounts. the cardiac muscle is the heart muscle and probably the most important one. these are only found in the walls of the heart and the heart pump blood to the other parts of your body. we have two different types of muscle fibers, slow twitch and fast twitch. slow twitch muscles enable long-endurance feats such as distance running. fast twitch fatigue faster but are used in powerful bursts of movements like sprinting. there are three different types of muscle contractions concentric, eccentric, isometric. concentric contraction causes muscles to shorten, thereby generating force.   eccentric contractions cause muscles to elongate in response to a greater opposing force. isometric contractions generate force without changing the length of the muscle.: //athleticquickness.com/muscle-contraction-types-part-1/