Arteries. Arteries carry oxygen-rich blood away from the heart to all of the body's tissues. They branch several times, becoming smaller and smaller as they carry blood farther from the heart and into organs.
Capillaries. These are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide, and other waste products to pass to and from cells.
Veins. These are blood vessels that take blood back to the heart; this blood contains less oxygen and is rich in waste products that are to be excreted or removed from the body. Veins become larger as they get closer to the heart. The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.
Any of the many tiny air sacs of the lungs which allow for rapid gaseous exchange are called alveoli.
Also known as an essential mineral, macrominerals are needed in large quantities in the human body. <span />
My guess is C for question one and D for question 2
Answer: a, b, c (this one is debatable), d, e, f
The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals. The skeletal system is also called the musculoskeletal system
Answer:
Gaucher disease is caused by a deficiency in the enzyme glucocerebrosidase, whose function is to break the glucocerebrosides (type of fat that can be found in the cell membranes) within the cell, which its accumulate cause damage to various organs.
Explanation:
Gaucher disease is the most common of lysossomal storage disease. It's a progressive and genetic disease. It is related to the metabolism of sphingolipids, which are normal components of lipids in cell membranes; they accumulate in lysosomes and cause neuronal, bone, and other extensive changes.
In the absence of this enzyme, there is an accumulation of a particle called glycosylceramide (or GL1). It's a kind of "garbage" that, swells up certain blood cells - macrophages. In this state, they lose their function and got accumulate in places such as the liver, spleen and bone marrow.
