Endocrine organs, Biology

Assignment Help:

Endocrine Organs

Endocrine organs, as explained earlier are those organs or tissues, which release chemical substances directly into blood stream. Not like exocrine glands they do not have ducts to carry their secretion, and are hence considered ductless glands. Table lists the endocrine glands of the higher invertebrate groups, the secretions they generate and the functions of the secretions. Among non-chordates neurosecretory cells (NSCs) form a significant constituent of the endocrine system.

Table: Endocrine Organs

139_Endocrine Organs.png

These are nerve cells specialised for hormone production. Thus they combine neural and endocrine properties. Apart from this, endocrine glands may arise from the nervous system, by complete modification. Corpus cardiacum of insects is one such gland. Several non-chordates have also epithelial endocrine glands derived from embryonic ectoderm, mesoderm or endoderm layers. The optic glands of cephalopod molluscs, androgenic glands and Y-organs of crustaceans, and the corpus allatum and prothoracic glands of insects are some instances. You will be studying these structures and their functions in detail. But previous to we proceed further, let us look into the concept of neurosecretion a little more elaborately, since neurosecretion plays a significant role in regulating metabolic and reproductive functions in non- chordates.


Related Discussions:- Endocrine organs

Determine the term - akinetic and myoclonic seizures, Determine the term - ...

Determine the term - Akinetic and Myoclonic Seizures Akinetic seizures are ordinarily seen only in children. Usually, an affected child collapses suddenly and without warning.

Butter, Ask question #Minimum 100 words role of micro organisms in preparat...

Ask question #Minimum 100 words role of micro organisms in preparation of butter accepted#

How to derive a mathematical equation, A microbiology student isolated a hy...

A microbiology student isolated a hypothetical bacterial cell that seems to quadruple every generation. Knowing that binary fission is an exponential function, derive a mathematica

What are the organs that are part of the male genital system, Q. What are t...

Q. What are the organs that are part of the male genital system? The organs that comprise the male genital system are the testicles, the vas deferens, the seminal vesicles, the

Zoonoses disease- taeniasis, Taeniasis Taeniasis is a zoonotic diseas...

Taeniasis Taeniasis is a zoonotic disease caused by specific cestodes. The two parasites of major importance are Taenia saginata and T. solium. Both in their adult forms, are

Differentiate between adult and infant botulism, Q. Differentiate between a...

Q. Differentiate between adult and infant botulism? • Adult Botulism is prevalent amongst adults whereas Infant Botulism is prevalent in infants of less than one year of age.

Food processing and preservation, various changes that occur during concent...

various changes that occur during concentration of food

How are lipids used as an energy source by the organism, How are lipids use...

How are lipids used as an energy source by the organism? Carbohydrates are the major energy source for aerobic cell respiration. In the absence or deficiency of such substances

Explain arterial switch operation surgery, Explain Arterial Switch Operatio...

Explain Arterial Switch Operation Surgery? This is the operation of choice for simple transposition of the great arteries as it ensures anatomical correction. The approach is t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd