Answer:
1. Endoneurium covers the myelinated or unmyelinated axons. it is a layer of delicate connective tissue that envelops the myelin sheath of each of the myelinated nerve fiber.
2. Perineurium covers fascicles. It is the connective tissue sheath that envelops fascicle of nerve fibers within a nerve.
3. Epineurium covers nerves. It is the outermost layer of dense irregular connective tissue that envelops the peripheral nerve and multiple nerve fascicles.
Answer:
Diffusion is important to plants and animals because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products.
Explanation:
Answer:
Angina is a type of chest pain caused by reduced blood flow to the heart.
<span>Air currents, or thermals, can be caused by differences in temperature, pressure, or impurity concentration. Temperature differences can cause air currents because warmer air is less dense than cooler air, causing the warmer air to appear "lighter."</span>