Chronic Diseases – Chronic Disease information to learn and live by

People do think only smokers are at risk of disease but many don’t know that people who live in surroundings of smokers are also at risk of diseases. Passive smoking is not a matter to be brushed off. (more…)

1:- MOTOR NERVE NUCLEI:
Somatic efferent nuclei- This functional component supplies the skeletal muscles developed from somites. The nuclei are present mostly medially. They are-

a) Nucleus of 3rd nerve- present in the midbrain at the level of superior colliculus.
b) Nucleus of 4th cranial nerve- present in the midbrain at the level of inferior colliculus. (more…)

The neural groove is converted into neural tube. The stages in the formation of neural tube do not proceed simultaneously all over the length of the neural plate. The middle part is first to become tubular so that for sometime the neural tube opens cranially and caudally.

The neural tube is divisible into enlarged cranial part and a caudal tubular part. The enlarged cranial part forms the brain. The caudal tubular part forms the spinal cord. The cavity of developing brain shows three dilatation craniocaudally, these are prosencephalon, mesencephalon and rhombencephalon. The prosencephalon becomes divided into telencephalon and diencephalon. Telencephalon contains right and left telencephalic vesicles. The rhombencephalon also becomes subdivided into a cranial part the metancephalon and a caudal part the myelencephalon. Parts of the brain that are developed from each division are as follows– (more…)

The formation of various parts of the face involves the fusion of diverse components. Thus fusion is occasionally incomplete and gives rise to various anamolies.

a) HARE LIP — The upper lip of the hare normally has a cleft hence the term hare lips, is used to detect of the lips. When one or both maxillary processes do not fuse with the medial nasal process, this defect is formed in the upper lip. This may vary in degree and may be ciruclated or bilateral. (more…)

The face develops from the 5 processes:

1) one from frontonasal process

2) two maxillary processes which are given from mandibular arches

3) two mandibular processes

FRONTONASAL PROCESS — It is a single process which divides into two process with the development of nasal pits. A lateral nasal process and a medial nasal process, which give rise to the forehead, the nose, the philtrum (or) the middle part of upper lip. (more…)

The palatine tonsil develops in relation to the lateral parts of the second pharyngeal pouch. The lymphoid tissue migrate and proliferate and form the lymphoid tissue. The surrounding mesoderm forms the connective tissue stroma for the tonsil. The lining endoderm becomes stratified squamous non-startified squamous non-keratinizing lining epithelium for the tonsil. These lining epithelium dips into the developing tonsils and forms tonsillar crypts. (more…)

Embryological subdivisions of palate and lines of fusion:– From each maxillar process a plate like shelf grows medially. This is called the palatal process.
The palate is formed from the three components:- They are
a) The two palatal processes and
b) The primitive palate formed from the frontonasal process. The definitive palate is formed by the fusion of these three parts as follows –
1) Each palatal process fuses with the posterior margin of the primitive palate.
2) The two palatal processes fuse with each other in the mid line. Their fusion begins anteriorly and proceeds backwards.
3) The medial edge of the nasal septum thus seperating the two nasal cavities from each other and from the mouth.
At a later stage the mesoderm in the palate undergoes intramembranous ossification to form hard palate. Ossification does not extend into the posterior most portion which remains as the soft palate. The part of the palate derived from the frontonasal process forms the premaxilla which carries incisor teeth. (more…)

WHAT IS AN ALLERGY?

Allergy is the abnormal sensitivity to external substances. The substances which cause allergy are called allergens. These are harmless in lower concentration. When allergens comes into contact with skin, or inhaled, it causes release of histamine, which in turn causes sneezing, running nose, watery eyes, itching headaches, etc. (more…)

Millets is like an alternative to common grains. It can be used to prepare all kind of food varieties which is possible to prepare with rice. It releases less amount of glucose as compared to glucose. (more…)

Prostate infection and enlargement problem is quiet common but it remains highly unnoticed. Some people may get affected by prostate cancer and it may lead to serious problems.

Where is Prostate Gland

Prostate Gland is situated below the Urinary Bladder. Prostate Gland helps to lubricate the Sperm in the process of Ejaculation.

What is Prostate Cancer

Infection in Prostate Gland is called Prostatitis and the Diabetics are more prone to this infection. Symptoms include (more…)