Not Covered under the OSH Act • The self-employed; • Immediate family members of farm employers; and • Workplace hazards regulated by another federal agency (for example, the Mine Safety and Health Administration, the Department of Energy, or the Coast Guard). Which employers do OSHA standards apply? OSHA covers mostRead More →
Hyaline cartilage, the most widely distributed form, has a pearl-gray semitranslucent matrix containing randomly oriented collagen fibrils but relatively little elastin. It is normally found on surfaces of joints and in the cartilage making up the fetal skeleton. Is hyaline cartilage highly vascular? Which type of cartilage is highly vascular?Read More →
copper reacts with moist air and forms a layer of copper carbonate which is basic in nature therefore lemon or turmeric is used to remove the copper carbonate layer . since lemon and turmeric are acidic in nature day neutralize the copper carbonate layer. How do you clean a copperRead More →
The middle cerebral artery (MCA) is a terminal branch of the internal carotid artery and is part of the anterior cerebral circulation. The MCA supplies many deep brain structures, the majority of the lateral surface of the cerebral hemispheres, and the temporal pole of the brain. Does the basilar arteryRead More →
Capillaries are so tiny that we can only see them with a microscope—they are thinner than a hair and smaller than a dot on a piece of paper. Which vessel has a thin wall? The walls of the capillaries are so thin that molecules can diffuse through the walls ofRead More →
This is called absorption. Absorption is what makes the small intestine such an important part of the digestive system. The small intestine has a rich blood supply so that these nutrients, which have been absorbed by the small intestine, can be carried away. Why are there so many blood vesselsRead More →
This is called absorption. Absorption is what makes the small intestine such an important part of the digestive system. The small intestine has a rich blood supply so that these nutrients, which have been absorbed by the small intestine, can be carried away. Why are there so many blood vesselsRead More →
It’s heart-healthy. Vodka can increase blood-flow and circulation in your body which can prevent clots, strokes, and other heart diseases. Vodka can also help lower your cholesterol. And, for those watching their weight, it’s also generally considered a lower-calorie alcohol. How does alcohol affect circulatory system? The cardiovascular system isRead More →
When caffeine makes the blood vessels in our bodies narrower, this leaves less room for blood flow which, in turn, raises blood pressure. The blood vessels supplying blood to the brain can also narrow as much as 27% after caffeine intake which can slow down our ability to think andRead More →
Most sympathetic activation promotes vasoconstriction. During cold stress, norepinephrine is released from sympathetic nerve endings and induces vasoconstriction through α-receptors or vasodilation via β-receptors. The skin of the extremities mainly contains α2 receptors and thus shows strong vasoconstriction (cf. Why does stress cause vasoconstriction? Emotional stress activates our nervous systemRead More →