Question

question 7
located in front of the lower voice box and the upper trachea, the ___ gland is the largest endocrine gland and is shaped like a shield.
o thymus
o pineal
o parathyroid
o thyroid

question 8
the ___ is referred to as the master gland of the body because it secretes multiple hormones that influence multiple body functions.
o pituitary
o adrenal
o parathyroid
o pineal

question 9
what does the adrenal gland produce?
o epinephrine and corticosterone
o melatonin
o thyrotropin releasing hormone
o thyroxine

Explanation:

• Question 7: The thyroid gland is located in front of the lower voice box (larynx) and upper trachea. It is the largest endocrine gland and has a shield - like shape. The thymus is involved in immune function (T - cell maturation), the pineal gland is related to circadian rhythms (producing melatonin), and the parathyroid gland is involved in calcium regulation.
• Question 8: The pituitary gland is called the "master gland" because it secretes hormones that regulate other endocrine glands (e.g., thyroid - stimulating hormone acts on the thyroid, adrenocorticotropic hormone acts on the adrenal glands). The adrenal gland is involved in stress response, the parathyroid in calcium balance, and the pineal in circadian rhythms.
• Question 9: The adrenal gland has two main parts. The adrenal medulla produces epinephrine (adrenaline), and the adrenal cortex produces corticosteroids (such as corticosterone). Melatonin is produced by the pineal gland, thyrotropin - releasing hormone by the hypothalamus, and thyroxine by the thyroid gland.

Answer:

• Question 7: Thyroid
• Question 8: Pituitary
• Question 9: epinephrine and corticosterone