Organ Systems Flashcards
4 types of tissues:
- Connective
- Muscular
- Epithelial
- Nervous
Histology
The study of tissues
Connective Tissue
Connective tissue holds our ligaments & bones together and fills spaces. They can protect, support, provide energy, and provide immunity, among other things.
Examples: Fat, Cartilage, Blood, Bones
Epithelial Tissue
Covers and protects the outside of our bodies as well as lines our inner body cavities. It can easily shed and replenish itself compared to other parts of our body.
Examples: Outer skin, Inner Cheeks, Stomach/Intestinal Lining
Muscle Tissue
It Provides movement to different parts of the body. Strong/dense, has lots of mitochondria in their cells
Examples: Smooth Muscle, Cardiac Muscle, Skeletal Muscle
Nervous Tissue
It helps our body send signals and communicate. Sensitive, can easily detect changes.
Examples: Neurons, Spinal Cord, Nerves
Organ
A collection of tissues with a similar function.
Examples: Brain, Lungs, Heart
Organ System
A group of organs working together to perform a specific function.
Examples: Circulatory System, Nervous System, Respiratory System
Arteries vs. Veins
Arteries = Red, Oxygenated
Veins = Blue, Deoxygenated
Cardiovascular System
Includes the heart, blood, and blood vessels.
What is the purpose of the cardiovascular system?
The heart contracts to move blood through the body. Blood transports nutrients, oxygen, & waste around the body. Blood Vessels carry blood and connect all the parts of the cardiovascular system
Where does CO2 in the cardiovascular system come from?
Cellular Respiration
Plasma
The liquid part of blood. It is a mixture of water, minerals, nutrients, sugars, proteins & other substances
What is blood made up of?
55% Plasma, 45% Erythrocytes, less than 1% Leukocytes & Plates
Platelets
Pieces of larger cells that clump together to slow down bleeding. They are pinched off larger cells found in bone marrow & circulate in the blood stream for 5-10 days. Lacking platelets is known as hemophilia
