Answer:
The correct answer will be option B-left atrium.
Explanation:
The coronary circulation is the circulation of blood and nutrients to the myocardium of the heart on both sides.
The coronary system consists of coronary arteries and coronary sinus(vein) in which coronary arteries arise from the main artery of the circulatory system called aorta. This aorta arises from the left atrium of the heart which supplies oxygenated blood. These coronary arteries divide into left and right arteries which supply oxygenated blood to the heart.
Thus, option B-left atrium is the correct answer.
Answer:
The size up of a motor unit varies from<u> just a few fibers</u> in the precise muscles to over a <u>thousand</u> fibers in the powerful muscles
Explanation:
A motor unit can be defined as a single motor neuron comprising all the muscle fibers that are stimulated by that neuron. Hence, when a motor neuron fires an electrical impulse, all the muscle fibers attached to that unit are contracted simultaneously. This motor unit can be smaller in size such as few neuron fibers to eyes for producing precise eye movement. On the other hand, these neurons can be delivering strong impulses to thousands of neuron fibers such as to leg muscles for producing powerful contractions.
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The medical history states that the patient has been exposed to air pollution, asbestos, and radiation. In addition to this, the patient smoked for 30 years. Presented with this information, one can conclude that the factor that contributed the most to the development of lung cancer would be smoking.
So, the answer to the question is that the habit of smoking had the greatest impact on the development of his cancer.
Hope this helps!
Factors considered before an antifungal is prescribed to treat systemic fungal infections are:
- Checking previous allergic conditions which can affect the treatment.
- Possible side-effects of the drug.
- Can antifungal medicine may interact with other medicines a patient is taking.
- Checking pregnancy conditions because they may affect the fetus or breastfeeding.
Systemic fungal infections are defined as invasive fungal infections which originate at a particular place in the body but have the ability to spread to other parts as well. Examples are aspergillosis and other mold infections as a result of inhalation; candidaemia as a result of infected lines or leakage from the gastrointestinal tract.
Improper medication for systemic fungal infections can lead to Infusion-related toxicity, Nephrotoxicity, including hypokalemia, liver function abnormalities, skin rash, visual disturbances, etc.
Learn more about Fungal infections here
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