The endocrine system

a. affects only the reproductive system
b. releases hormones into the bloodstream
c. competes with the nervous system
d. is made up primarily of glands with ducts

I chose d. Is this correct? I want to make sure.

The endocrine system refers to the collection of glands of an organism that secrete hormones directly into the circulatory system to be carried towards distant target organs.

Since the hypothalamus also secretes hormones, I would pick B.

Thank you.

No, choice d is not correct. The correct answer is b, the endocrine system releases hormones into the bloodstream.

To understand why this is the correct answer, let's break down the question and analyze the other choices:

a. The endocrine system does not solely affect the reproductive system. It regulates the functions of various organs and processes throughout the body, including growth, metabolism, and homeostasis.

c. The endocrine system does not compete with the nervous system. While they both play roles in signaling and communication within the body, they often work together to maintain overall body function rather than competing against each other.

d. The endocrine system is primarily made up of glands without ducts. Glands of the endocrine system, such as the pituitary gland, thyroid gland, and adrenal glands, secrete hormones directly into the bloodstream rather than through ducts.

Therefore, the correct answer is b, as the endocrine system releases hormones directly into the bloodstream to regulate various bodily functions.