What is the definition and types of host ?

-

Host

Persons or animal that provides subsistence or lodgement to an infectious agent as called as host.

Types of Host

1. Obligate host/ only host : an host which survive only one place. eg. Man for measles.

2. Primary host/ definitive host : when parasites passes it's sexual phase. eg. Mosquito for malaria parasites.

3. Secondary host/ intermediate host : when the parasites passes it's asexual life. eg. Man for malarial parasites.
Location:India Bhopal, Madhya Pradesh, India

Comments

Post a Comment

Please do not enter any spam link in the comment box

Popular posts from this blog

Lysosomes

-
Image
Name :- Lysosomes, garbage system of the cell, suicidal bag of the cell Properties : These are membrane bound vesicular structures founds throughout the cytoplasm. These are formed by the process of packaging in the golgi apparatus. Enzymes of lysosomes are synthesized in rough endoplasmic reticulum. Among the organelles, the lysosomes have the thickest covering membrane that is formed by a bilayered lipid material . Lysosomes have 50 different hydrolytic enzymes, known as acid hydroxylases. Types of Lysosomes : Primary lysosomes, this is an inactive of form of lysosomes. Secondary lysosomes, this is an active form of lysosomes (lysosomes active during phagosome or endosome and at this time lysosomes pH become acidic and enzymes are activate). Lysosomal Enzymes :   Proteases :- which hydrolyze the proteins into amino acids. Lipases :- which hydrolyze the lipids into fatty acids and glycerides. Amylases :- which hydrolyze the polysaccharides into glucose. Nucleases :- whi
Read more

Clavicle

-
Image
Clavicle  Synonames Collar bone, Beauty bone. Anatomical position It extends laterally and horizontally at the root of the neck Side Determination  1. Flattend end laterally. 2. Medial two-third of clavicle is convex anteriorly. 3. Rough area on the lateral side faces inferiorly. Special Features  It is only long bone which lies horizontally. It has no medullary cavity (Bone marrow). It is the first bone to ossifies in the body ( second bone to ossifies Mandible). Almost whole clavicle visible through skin can be palpable. It has the only long bone which has two primary center of ossification. It has only long bone which ossifies in membrane. General features of right clavicle (a) Superior aspect (b) Inferior aspect Features It has 2 ends (Medial or Sternal, Lateral or Acromial end) and a shaft. Lateral end  It is flattend from above downwards. It articulate with the acromian process of scapula to form acromioclavicular join
Read more

Practical Medicine (P. J. Mehta's)

-
Image
Practical Medicine (P. J. Mehta's) 20th edition CONTENTS PART-1 CLINICAL CASES 1. History Taking and Symptomatology 2. General Examination 3. Abdomen 4. Respiratory System 5. Cardiovascular System 6. Central Nervous System PART-2 TABLE-WORK 7. Medical Emergencies 8. Electrocardiography 9. Radiology 10. Instruments 11. Procedures 12. Hematology 13. Clinical Pathology 14. Pathology Specimens 15. Drugs ABOUT BOOK Name Book Practical Medicine (P. J. Mehta’s) Author/ Editior (20 th edition) SP Mehta, SR Joshi, Nihar P Mehta / Dr. Hardik shah, Dr. Sunita Iyer, Dr. Nikesh Jain, Dr. Rajiv Shah. Type pdf. Size 69.47 MB Pages 630 Pages type Colored Quality (Good/average/bad) Good D ownload Now Similar Posts :- 1.  Park’s Textbook of PSM 2.  Review of Preventive and Social Medicine (Vivek Jain) 3.  Medicine (Exam Preparatory
Read more

Textbook of Pathology (Harsh Mohan ) 7th edition

-
Image
Textbook of PATHOLOGY by Harsh Mohan 7th edition CONTENTS Section  I : GENERAL PATHOLOGY Introduction to Pathology Cell Injury, Cellular Adaptation and Cellular Ageing Immunopathology Including Amyloidosis Derangements of Homeostasis and Haemodynamics Inflammation and Healing Infectious and Parasitic Diseases Neoplasia Environmental and Nutritional Diseases Genetic and Pediatric Diseases Section   II : HAEMATOLOGY AND LYMPHORETICULAR TISSUE Introduction to Haematopoietic System and Disorders of Erythroid Series Disorders of Platelets, Bleeding Disorders and Basic Transfusion Medicine Disorders of Leucocytes and Lymphoreticular Tissue Section  III : SYSTEMIC PATHOLOGY The blood vessels and lymphatics The Heart The Respiratory System The Eye, ENT and Neck The Oral Cavity and Salivary Glands The Gastrointestinal Tract The Liver, Billiary Tract and Exocrine Pancreas The Kidney and Lower Urinary Tract The Male Reproductive System and Prostate Th
Read more

Femur

-
Image
Femur The femur is a latin word it means thigh. Femur is the longest and strongest bone of the body. Femur has 27% length of total body length. Weight of femur is about 380gm in males and 279gm in females. Quantity of femur are two in number. Side Determination 1. Head directed medially. 2. Medial and lateral condyle (lower end) inferiorly. 3. Cylindrical shaft is convex forward. Joint Formation  1. Hip joint - between head of femur and acetabulum of Hip bone . 2. Knee joint - between lower end of femur and upper end of Tibia. Features  It has upper end, lower end and shaft. Right femur anterior aspect Upper end It has head, neck, greater trochanter ( Greek- runner), lesser trochanter, intertrochantric line and intertrochantric crest. Head -  It forms more than half a sphere and is directed madially, upwards and slightly forwards. It articulates with the acetabulum to form hip joint. It has a pit that is called fovea.
Read more

Cerebro spinal fluid (CSF)

-
Image
Cerebrospinal fluid or CSF CSF is the modified colour less tissue fluid. CSF present in ventricular system of brain and sub arachnoid space around spinal cord and brain. Formation Maximum part of CSF is formed by choroid plexus of lateral ventricle, and lesser part of CSF  is formed by third and fourth ventricles. Some part of CSF  is also formed by capillaries present surface of spinal cord. Quantity                 : 150 ml Rate of formation : 0.3ml / min Reaction                 : Alkaline Specific gravity     : 1.005 Coagulation           : It does not coagulate in standing Pressure exerted  in man by CSF, varies in different position... Lateral recumbent position : 10 - 18 cm of water Lying position                         : 13 cm of water Sitting position                        : 30 cm of water Composition of CSF 1. Water - 99.13 % 2. Solids - 0.87% A. Organic substances Proteins          : 20-30 mg / dl Amino acids   : 10 -30 mg / dl Sugar       
Read more