Answer:
c. synaptic cleft
Explanation:
A neuromuscular junction is formed between a motor neuron and a muscle fiber called as sarcolemma. A signal is passed from motor neuron to muscle fiber which eventually leads to muscle contraction.
Motor neurons release the neurotransmitter Acetylcholine in synaptic cleft. Acetylcholine diffuses through it and ultimately binds to the nicotinic acetylcholine receptors on cell membrane of sarcolemma. Nicotinic acetylcholine receptors are ligand gated ion channels and get depolarized by binding to acetylcholine which results in muscle contraction.
-Ultraviolet (UV) exposure – The sun is the most well-known source of UV radiation, but UV rays also come from tanning beds and other artificial sources.
-Genetics – Some risk factors of skin cancer can be inherited through our DNA.
-Immunosuppression – Some conditions, like AIDS, and certain medications, such as those provided after organ transplants, can suppress the body’s immune system and might contribute to the development of skin cancer.
-Radiation exposure – In addition to UV, there are other forms of radiation that may adversely affect the skin cells, such as X-rays or therapeutic radiation.
-Toxic sunscreens -- Most sunscreens block the absorption of Vitamin D with toxic chemicals that seep through the skin and into the bloodstream and all throughout your body. Using these toxic sunscreens could actually cause cancer. Some toxic ingredients that are in these kinds of sunscreens: oxybenzone. benzene, parabens, homosalate, octinoxate, and octocrylene
Caucasians are more at risk for skin cancer because they have less melanin produced in their skin. Lighter skin tones produce less melanin and are more prone to damaged DNA particulate from UV radiation.
Answer:
lacross
Explanation:
the hand eye corrdinatin is really hard
ADHD? Or maybe depression and/or anxiety?
Making charts, keeping files and documents on a desktop. Hope this helped have a good day :)