Question

6. Which of the following statements
about the pancreas are false?
a. The pancreas consists of
islets of Langerhans.
b. The islets consists of three
cell types.
c. Alpha cells produce insulin.
d. Beta cells produce insulin.

7. The adrenal gland consists of how
many functionally distinct types of
tissue?
a. One
b. Two
c. Three
d. Four

8. The pituitary gland is controlled by
the:
a. Hypothalamus
b. Thalamus
c. Thyroid
d. Parathyroid

Answer 1

6)

c. Alpha cells produce insulin.

• Alpha cells of islet produce glucagon.Glucagon increases the glucose level in the body.
• Option B is incorrect because each islets of pancreas produce mainly 3 types of cell, they are alpha cell ,beta cell and delta cell , which are responsible for secretion of pancreatic hormones.But there also produce a 4th type of cell called C cell, were function is unkown.
• Option A is wrong because endocrine portion of pancreas with irregularly shaped patches is known as islets of langer hans.
• Option D is wrong , because beta cells produce insulin.

7)

b. Two

• Adrenal gland mainly consist of 2 type of tissue, they are steroidogenic cells of mesodermal origin and neural crest–derived catecholamine-secreting cells.Hence option A , C and D are wrong.
• Center of cell is medulla , which produces adrenaline and nor adrenaline, which is released into blood stream.
• Surrounding the medulla is called cortex , which produce variety of steroid hormones.

8)

a. Hypothalamus

• Hypothalamus control pituitary by send messages . which is situated immediately above the pituitary gland.
• Pituitary gland is called master gland because , it control several other type of hormone producing gland in the body.
• Option B is wrong , because thalamus is a main sensory relay station.
• Thyroid and parathyroid gland hormone help in maintaining calcium balance in the body .Hence option C and D are wrong.