True ot False 1) Messages sent by the endocrine system are typically faster than

ID: 102243 • Letter: T

Question

True ot False

1) Messages sent by the endocrine system are typically faster than messages sent by the nervous system ?

2) The ovaries can act as an endocrine gland

3) Steroids hormones usually bind to receptors on the plasma membrane of their target cells

4) ADH is synthesized in the posterior pituitary

5) in females the endometrial lining is shed and bleeding starts because progesterone in the system decrease?

6) FSH is produced and released only and females not in males

7) A change in plasma levels of a particular hormone can cause an increase and the release of the hormone?

8) All hormones released from the pituitary gland come from the anterior pituitary gland.

) Messages sent by the endocrine system are typically faster than messages sent by the nervous system ?

False. Nervous system messages are in form of electric impulse and are much faster than chemical signals by endocrine system.

2) The ovaries can act as an endocrine gland

False: they are called heterocrine glands as they release hormone as well as other secretions like egg.

3) Steroids hormones usually bind to receptors on the plasma membrane of their target cells

False: steroid hormones are lipids soluble so they easily cross plasma membrane without binding with receptor.

4) ADH is synthesized in the posterior pituitary.

False: it is synthesized in hypothalamus and stored in posterior pituitary.

5) in females the endometrial lining is shed and bleeding starts because progesterone in the system decrease?

True: that's why progesterone is called pregnancy maintaining hormone.

6) FSH is produced and released only and females not in males

False it is released in males too and helps in sperm formation.

7) A change in plasma levels of a particular hormone can cause an increase and the release of the hormone?

True: this type of mechanism is called feedback regulation.

8) All hormones released from the pituitary gland come from the anterior pituitary

False: vasopressin/ADH and oxytocin are formed in hypothalamus but stored in posterior pituitary.

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