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the placenta and thymus

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Q: What two endocrine organs are active only during specific life cycle stages?
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Related questions

What is the type of regulation in the endocrine system?

Hypothalamus and pituitary gland secrete hormones and regulate other endocrine organs. They are the main regulatory organs of the endocrine system


Is immunology the study of hormones and endocrine organs?

Immunology is the study of the body's defense system. Endocrinology is the study of hormones and endocrine organs.


What organs are purely endocrine organs?

You have the pituitary gland, thyroid gland, parathyroid glands and adrenal glands. They are pure endocrine glands.


What organs do hormones travel from endocrine glands through bloodstream?

Hormones travel from endocrine glands through bloodstream to target organs.


What are the two endocrine organs located in the neck region of a cat?

The two endocrine organs located in the neck region of a cat are the thyroid and the parathyroid. Humans also have these organs in their necks.


Endocrine glands are protectors?

The endocrine glands do no work to protect anything. The endocrine glands are responsible for secreting hormones to the organs.


What system regulates the body's metabolism growth and functions of the sexual organs?

The Endocrine System.


What system produces chemical signals hormones?

endocrine system


Which two endocrine organs are directly related to the reproductive system?

The ovaries and testes are endocrine organs that are also parts of the reproductive systems of females and males, respectively.


Which endocrine organs would you expect to be relatively larger in humans than cats?

The endocrine organs you would expect to be relatively larger in humans than cats include the thymus and the adrenal glands. Adrenal glands are also known as suprarenal glands.


Does the endocrine system have organs?

Yes it does have an organ; the pancreas.


What are the mixed endocrine-exocrine organs?

One of the mixed endocrine-exocrine organs is the pancreas. It has a mixture of the two tissues. The larger, exocrine part has clusters of secretory cells that form sacs known as acini. The smaller endocrine tissue is known as the islets of Langerhans, which go throughout the entire pancreas. The other endocrine organs that are mixed glands are the ovaries and the testes. Mixed glands means that they are endocrine and exocrine in function.