Which of the following has both endocrine and exocrine activity? A) the pituitar

Question

Which of the following has both endocrine and exocrine activity? A) the pituitary gland B) parathyroid glands C) salivary glands D) the pancreas The body fluids of an osmoconformer would be ____ with its ______ environment A) isoosmotic; freshwater B) hyperosmotic; saltwater C) isoosmotic saltwater D) hypoosmotic; saltwater Compared to wetland mammals, water conservation in mammals of arid regions is enhanced by having more ___. A) juxtarnedullary nephrons B) urinary bladders C) ureters D) podocytes Much of the coordination of vertebrate body functions via chemical signals is accomplished by the ______. A) respiratory system B) endocrine system C) integumentary system D) excretory system

Explanation / Answer

ANSWER) PANCREAS has both the function of exocrine and endocrine ,the bulk is exocrine in function and forms culster of glandular cells called acini or lobules and islets of langerhans consist of endocrine cells that discharge their secretion directly into the blood.

ANSWER) ISOOSMOTIC TO SALT WATER a few marine animals such as the hagfish ,myxine maintain body fluids about as salty as the sea water of the surrounding ocean that is isoosmotic nd so dont tend to lose water by osmosis.

ANSWER) JUXTAMEDULLARY NEPHRON are those nephron which has long loop of henle and it extends upto medulla of kidney and these nephron having long loop of henle reabsorbs more water through counter current mechanism and results in formation of concentrated urine. as we know in arid regions the availability of water is very less that is why these nephrons paly important role in conseravtion of water.

ANSWER) ENDOCRINE SYSTEM is made up of eight major glands each of which secretes different type of hormone as a chemical messenger, each of which regulates the body function ,metabolism , growth, tissue development etc.

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