Nephridia Are ____

question 46

Multiple Choice

Nephridia are ____.  

• A) circulatory organs
• B) respiratory organs
• C) excretory organs
• D) endocrine organs
• E) part of the nervous system

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Definitions:

Estrogen

A group of steroid hormones that play an essential role in the development and regulation of the female reproductive system and secondary sex characteristics.

Hormones

Chemical messengers produced by glands in the body that regulate the activity of cells or organs, influencing many physiological processes.

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another 'target' neuron.

Target Organs

Specific organs or tissues at which a drug, hormone, or other substance acts.