Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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
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.
Q. Under which forms is the Trypanosoma cruzi found in its hosts? In the definitive hosts also as in triatomine bugs (intermediate hosts) the protozoan that causes Chagas' dise
PHYLUM CNIDARIA (= COELENTERATA ) Definition and Introduction Tissue grade eumetazoans with a radial symmetry .The term coelenterate signifies the presence
Q. What are the main biological functions of water? Ans. Water is the basic solvent for chemical reactions of living beings; it is the main means of substance transportati
Denaturing Gel is an agarose or the acrylamide gel run under conditions which destroy the secondary or tertiary protein or RNA. For protein, this generally means the inclusion of
To which heart chamber does the blood go after leaving the left atrium? What is the valve that separates these compartments? The arterial blood that has come from the lungs to
How is a prototype drug different from other drugs in the same class?
Steps for Conversion of food Conversion of food is done in four steps: 1) Ingestion, mastication and swallowing: Ingestion or taking in of food and mastication are done b
What is meant when it is said that a bacteria is an obligate anaerobe? Obligate anaerobes are the living beings that do not survive in the presence of oxygen. For instance, the
how to write a project on phylum arthropoda
Define Interaction of Vitamin C with other vitamins? a. Ascorbic acid and other vitamins: Ascorbic acid synthesis is diminished in thiamin and riboflavin deficiency. Vitamin
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd