10 Questions
Which type of glands are called ductless glands?
Endocrine glands
What is the current scientific definition of hormones?
Non-nutrient chemicals that act as intercellular messengers and are produced in trace amounts
In which organisms do invertebrates possess very simple endocrine systems?
Invertebrates
What do hormones act as in the body?
Intercellular messengers
What is the main function of the human endocrine system?
Providing coordination through hormone secretion
Which type of glands lack ducts and are called ductless glands?
Endocrine glands
What are the secretions of endocrine glands called?
Hormones
According to the classical definition, how are hormones transported to their target organs?
Through the blood
What is the current scientific definition of hormones?
Intercellular messengers
Do invertebrates possess simple or complex endocrine systems?
Simple
Test your knowledge on endocrine glands and hormones. Learn about the functions and characteristics of these ductless glands and their secretions. Explore the scientific definition of hormones as intercellular messengers.
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