Circulatory system

                                     CIRCULATORY SYSTEM

TERMINOLOGY 

atria - Two superior chambers of the heart, serve as receiving chambers

ventricles - the two lower chambers of the heart, and they pump blood out to the lungs and body.

aorta - the large trunk artery that carries blood from the left ventricle of the heart to branch arteries.

superior vena cava - large vein that brings oxygen poor blood from the upper part of the body to the right atrium.

inferior vena cava - brings oxygen poor blood from the lower part of the body to the right atrium.

pulmonary arteries - carries oxygen poor blood from the right ventricle to the lungs to pick up oxygen and release carbon dioxide waste. 

pulmonary veins- a vein carrying oxygenated blood from the lungs to the left atrium of the heart.

Adipose Tissue

Brown Adipose Tissue
 

     In histology class we went over adipose tissue, what is compose of and what are the main functions of this tissue. Adipose tissue is found under the skin and in between organs. There are two types of adipose tissue: white adipose tissue and brown adipose tissue. White adipose tissue helps the body to store energy and brown adipose helps to generate heat. Brown adipose tissue is most commonly be found in babies. Once it was thought the adults did not posses any brown adipose tissue, but we do have a little of brown tissue in our bodies. Spending time in the cold makes brown adipose tissue to activated and even produce new adipocytes cells. Brown adipose tissue helps a new born to stay warm seen they don't have the ability to shiver. In adults brown tissue serve as like a internal heat jacket, keeping blood warm as it flows through the body. 

Nervous System

Vocabulary Nervous System 

Nervous System- controls and coordinates functions throughout the body and responds to internal and external stimuli; system

Neurotransmitters - contained in sacs in axon terminals; released to cause stimulus in the next cell; chemicals.

Neurons- cells that transmit impulses.

Action Potential - reversal of charges across the cell membrane of a neuron as an impulse passes

Threshold- minimum level of stimulus needed to activate a neuron

Resting potential - electrical charge across the cell membrane of a neuron

Myelin Sheath- insulating membrane around axon; creates nodes; keeps impulses moving along the axon = more efficient.

Axon - long fiber that carries impulses away from the cell body

Dendrites - short branched extensions that carry impulses towards the cell body

Cell Body- largest part of the cell; contains cytoplasm and nucleus; controls metabolic activity

Reflection Histology Book

Histology Book 

               Histology is the study of the microscopic structure of tissue. The image shown above is the seventh edition book of a text and atlas. So far in our histology class we have study thoroughly chapters 1 to 8. Each of the chapters that we have already study have a great educational format to study tissues. I personally think that this histology book is well organized, each chapter is sectioned by color. Because the chapters are well organized in sections, it is easy to follow and understand the information on them. The book provides great imagining of each type of tissue, and all of them explain in detail what microscopic picture shows. At the end of the chapter there is a short summary and larger pictures showing various structures of the tissue discuss in the chapter. Each chapters focuses in depth on procedures, samples, terminology, and identification on the various type of tissues. In my opinion I think this is a great book to study and even keep after the course is over.