Exchange of Gases

-


Alveoli are the primary sites of exchange of gases in the lungs.
exchange of gases also occurs between blood and tissues. 


Comments

Post a Comment

Popular posts from this blog

Lymphatic System

-
Image
 Lymphatic System it is an extensive network of thin walled vessels that arise as blind ended lymph capillaries in most of the tissues of the body. the lymph capillaries unite to form a tree like structure of increasingly larger lymph vessels, which finally drain lymph into veins in the lower neck region, lymphatic system is an open circulatory system. lymph capillaries are microscopic, closed ended tubes that form vast network in the intercellular spaces. the walls are composed of endothelial cells, with porous junctions, through which interstitial fluid / extracellular fluid , proteins, microorganisms and absorbed fats can easily enter. once the extra cellular fluid enters the lymphatic capillaries, it is referred to as lymph  click here for complete lecture
Read more

Digestive system of human.

-
Image
Digestion And Absorption Class 1 Digestive System includes alimentary canal and associated glands. Alimentary Canal: Mouth - Oral cavity - Pharynx, - Oesophagus - Stomach - Small Intestine - Large Intestine - Rectum - Anus  Oral Cavity have Tooth, Tongue, Palate    4 Types of Tooth (Hetero, theco, diphyodont dentition)  Incisors Canines Premolars Molars  Tongue is Strongest muscel  4 types of papillae present on tongue Fungiform Filiform Circumvallate Foliate To Listen Complete Lecture of Oral Cavity :  Digestion And Absorption Class 1 To Visit Our Channel for Remaining Classes : Rajesh Biology  
Read more

Pancreas

-
Image
Digestion and absorption class 7 Pancreas is 2nd largest gland in body. it is present between the c shaped limbs of duodenum. it is leaf like structure and mixed gland. exocrine part of pancreas release pancreatic juice. which is essential for digestion. duct of pancreas and bile duct unite to form hepato-pancreatic duct. and it enter into duodenum. this duct is controlled by sphincter of oddi. endocrine part of pancreas is known as Islets of Langerhans. which release hormones like insulin, glucagon etc.. click here for complete lecture 
Read more