Corpus cardiacum - endocrine organs, Biology

Corpus Cardiacum - Endocrine Organs

We before mentioned that corpus cardiacum (pl. corpora cardiaca) is a neurohemal organ in insects. It is gland of neural origin. They are considered as transformed ganglia. Except for these, we will discuss in the ensuing section a number of other endocrine glands. Most of them are, though, of epithelial origin. The corpora cardiaca are situated close behind the brain dorsally, on either side of the dorsal aorta or stay in close association with it. They appear as a white bluish organ in dissections and thus we can easily locate them under dissection microscope. Though they are neurohemal organs in insects like they contain fibre terminations of NSCs situated in the pars inter-cerebralis of the brain, they comprise their own cells too. That is, they contain intrinsic cells, which synthesise hormones different from the ones produced by the NSCs of the pars inter-cerebralis. Thus they have a dual function. They are the neruohaemal organs as well as endocrine glands in their own right. They receive generally two or sometimes three nerves from the brain in front and are connected to the corpora allata (sl. corpus allatum) behind, by allatal nerves. In a number of insects there may be also ordinary non-secretory neurones in the corpora cardiaca.

Posted Date: 2/4/2013 7:56:14 AM | Location : United States







Related Discussions:- Corpus cardiacum - endocrine organs, Assignment Help, Ask Question on Corpus cardiacum - endocrine organs, Get Answer, Expert's Help, Corpus cardiacum - endocrine organs Discussions

Write discussion on Corpus cardiacum - endocrine organs
Your posts are moderated
Related Questions
Explain about the physiology of eyelid movements. Physiology of Eyelid Movements: It is quoted that the eyelids move more than any other part of the body. The major movem

Since hypoglycaemia can occur in any diabetic patient at any time, it is important for you to learn the causes of hypoglycaemia. Such knowledge will help you to educate the patient

explain mitosis in detail

Many disease states are heralded by changes in the blood count Leukocytosis can be a sign of infection. Thrombocytopenia can result from drug toxicity. Pancytopenia is ge

Explain Mid-diastolic and Lafe Diastolic (Pre Systolic) Sounds ? Mid-diastolic sounds are S3 sounds and late diastolic (pre systolic) sounds are S3 sounds. Pre systolic Pacema

Q. What is the function of the antidiuretic hormone? Where it made and which is the stimuli that increase or reduce its secretion? The antidiuretic hormone is secreted by the h

What is Bone grafting The detailed description of the graft materials ranging from alloplastic, xenograft, allograft and autogenous grafts;  including their choice has been dis

Q. Food texture and Gas formers? Food texture: Recent studies indicate that strict omission of fibre is of no help on a peptic ulcer patient. The recurrence of peptic ulcer was

Colibacillosis of newborn animals This is the commonest disease entity of newborn farm animals. In calves the disease  occurs in three forms, viz. enteric colibacillosis manif

Q. How many of the same proteins are made at the same time by each ribosome in the translation of one mRNA molecule? How does successive protein production occur in translation?