Tissues - M2L1 Assignment
4 Main Tissues and Physiology
Epithelial Tissue
Epithelial tissue covers the inside and outside of the body, including organs. It also lines cavities, tubes, ducts, blood vessels, and is the main tissue of glands.
Epithelial tissue has a few main functions;
Epithelial tissues is the best type for it function and location. Seeing that as the epithelial tissue is the first line of defense, it would only make sense for that to be the outlining, protective layers of such vital functions. If the body didn't have this protective coat, the internal organs and systems would be openly exposed and therefore more probable to come into contact with dangerous pathogens or other harmful substance.
Connective Tissue
Connective tissue connects, binds, and supports body structures all throughout the body including the nervous system and in between other tissues.
Connective Tissue can be broken down into five different types; Bone, Cartilage, Dense Connective, Loose Connective, and blood. These particular types have their own functions, some listed above, that makes up the function and form of all connective tissue.
ie. Bone protects and provides the support, Cartilage stretches and bears the weight. Loose and Dense Connective Tissues help diffuse oxygen, nutrients, as well as waste products, and blood transfers the products.
Muscle Tissue
Skeletal Muscle Tissue
Skeletal Muscle Tissue is mainly located in the walls of hollow organs. It is held together in the connection of tendons to bone. This helps control Body Movement as a voluntary movement as well as a more involuntary reflex such as general posture.
Smooth Muscle Tissue
Smooth muscle tissue is mainly in organ walls and blood vessels. This tissues main job is to move blood, food, and waste throughout the body’s organs. Due to these functions, it is a involuntary reflex in which one doesn’t have to think about.
Cardiac Muscle Tissue
Cardiac muscle tissue is found around the walls of the heart. It controls the synchronized contractions of the heart, which in turn propels blood around the body.
Nervous Tissue
Nervous Tissue is made up of neurons which conducts and transmits nerve impulses to and from body organs. Some cells, called the Neuroglia, support, insulate, and protect neurons. While it sends signals throughout the body it is the main tissue of the nervous system which includes the central nervous system and the peripheral nervous system. The main function of the nervous system is to form the communication network in which it send signals all across the tissues. This means the nervous tissue is responsible for sensory input, control of muscles and glands, homeostasis, and mental activity.
Sources
http://lh5.ggpht.com/-XnF2AbYQ-GE/Uteh-eu4I2I/AAAAAAAAA4M/OnWyCamOaSw/image%25255B10%25255D.png?imgmax=800 (Epithelium (Transitional) picture 2)
https://en.wikipedia.org/wiki/Epithelium (Epithelial outside source)
http://shop.omegascientific.com.au/image/cache/data/products/72-044-500x500.jpg (Connective Tissue Picture)
https://classconnection.s3.amazonaws.com/519/flashcards/2297519/png/screen_shot_2012-11-29_at_55845_am1354197747306.png (Connective tissue classification chart picture 2)
https://en.wikipedia.org/wiki/Connective_tissue (Connective outside source)
http://lyceum.algonquincollege.com/lts/onlineCourses/anatomy/App_Themes/e-learning/images/diagrams/2-6_skeletal.jpg (Muscle Tissue Picture 1)
http://www2.victoriacollege.edu/dept/bio/Belltutorials/Histology%20Tutorial/Basic%20Tissues/imageFLL.JPG (Muscle Tissue Picture 2)
https://upload.wikimedia.org/wikipedia/commons/d/d5/414c_Cardiacmuscle.jpg (Muscle Tissue Picture 3)
https://en.wikipedia.org/wiki/Muscle_tissue (Muscle Outside source)
http://www.mun.ca/biology/mcolbo/Lectures%2012,13,14/40-03-Neuron.jpg (Nervous tissue picture)
https://training.seer.cancer.gov/images/anatomy/nervous/neuron-structure.jpg (Nervous tissue Picture 2)
https://en.wikipedia.org/wiki/Nervous_tissue (Nervous Tissue outside source)
and of course the notes!