Osmosis and simple diffusion do NOT require the actions of carrier proteins.
Answer the following statement true (T) or false (F)
True
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Your friend puts on a mask and chases you as a prank. Your body responds by releasing epinephrine and norepinephrine, along with other physiological responses. Your friend frightening you is the ________, that cause the body's response.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. Schwann cells produce myelin for neurons outside the central nervous system. 2. Nodes of Ranvier are indentations between Schwann cells. 3. One of the differences between white matter and gray matter is that gray matter has a myelin sheath. 4. Perineurium surrounds fascicle. 5. The tough outer fibrous sheath that covers the whole nerve is called the endoneurium.
Answer the following statements true (T) or false (F)
1. During inspiration, the diaphragm contracts and moves up into the thoracic cavity. 2. During inspiration, the size of the chest cavity enlarges. 3. If atmospheric pressure is 760 mm Hg, the pressure inside the chest cavity must be below 760 mm Hg for inspiration to occur. 4. Quiet expiration requires the work of both the intercostal muscles and the abdominal muscles. 5. In some lung diseases, the lungs lose their elasticity and their ability to recoil. This would have the greatest impact on expiration.
The substances that make sweat feel gritty are water ___1____ and ____2_____
Fill in the blank(s) with the appropriate word(s)