Reviewing your knowledge e x e r c i s e 18 a. connective tissue coverings identify the connective tissue covering. 1. 2. 3. covers unmyelinated or myelinated axons covers fascicles covers nerves

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.  

it restores trees to areas where they once grew.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.