The cricoid cartilage is a ring-shaped structure that sits just below the thyroid cartilage, at the level of the C6 vertebra. Is the Adam’s apple the cricoid cartilage? The thyroid cartilage is here, below the hyoid bone. The cricoid cartilage is here, just below the thyroid cartilage. … In theRead More →
Abyssal plains are remarkably flat, having a slope of less than 1:1,000 (or less than 1 m change in height over a distance of 1 km), because of the thick sediment drape that covers and subdues most of the underlying basement topography. What does the abyssal plains consist of? AbyssalRead More →
Common causes of fecal incontinence include diarrhea, constipation, and muscle or nerve damage. The muscle or nerve damage may be associated with aging or with giving birth. Is the slow movement of feces through the large intestine? Constipation occurs when stool passes through the large intestine too slowly. Bowel incontinenceRead More →
But considering only those which are 0.2 hectares (half an acre) or more in area and are islands at all states of the tide, the British Isles total about 4,400; of these about 210 are inhabited. What countries make up the British Islands? The British Isles is the name ofRead More →
Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones areRead More →
Gage suffered a severe brain injury from an iron rod penetrating his skull, of which he miraculously survived. After the accident, Gage’s personality was said to have changed as a result of the damage the frontal lobe of his brain. What happens if the left frontal lobe is damaged? SomeRead More →
The Alleghenian orogeny resulted from the collision of the central and southern Appalachian continental margin of North America with that of North Africa in late Paleozoic time. What is orogeny caused by? Orogenies may result from subduction, terrane accretion (landmass expansion due to its collision with other landmasses), the underthrustingRead More →
Bone marrow makes stem cells, which produce platelets and white and red blood cells. Here’s why those cells are important to your child’s health. A bone marrow transplant (BMT) restores healthy bone marrow in children with stem cell defects, cancer and certain inherited diseases. What is red bone marrow? TheRead More →
There are two types of bone marrow: red and yellow. Red bone marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets. Yellow bone marrow is made mostly of fat and contains stem cells that can become cartilage, fat, or bone cells. Which bonesRead More →
Henry Bessemer, in full Sir Henry Bessemer, (born January 19, 1813, Charlton, Hertfordshire, England—died March 15, 1898, London), inventor and engineer who developed the first process for manufacturing steel inexpensively (1856), leading to the development of the Bessemer converter. How did the Bessemer process changed the world? A process thatRead More →