Science Part 2: The Circulatory System Flashcards
What controls the circulation of blood and lymph through the body?
Circulatory (Vascular) System
What are the 2 parts of the circulatory (vascular) system?
- Cardiovascular or Blood-Vascular System
- Lymph-Vascular or Lymphatic System
Heart facts:
Cone-shaped muscular organ located in the chest. Encased in the pericardium membrane. Contracts and relaxed to move blood. Consists of 4 chambers. Beats 60-100 times per minute
What is blood?
The sticky, salty fluid that circulates through the body, bringing nourishment and oxygen to all body parts and carrying toxins and waste products to the liver and kidneys to be eliminated. Average adult supply is 8-10 pints.
What is the function of blood?
Transport oxygen, waste, nutrients, and hormones. Protect the body from threat of infections and disease-causing bacteria. Regulate the temperature, pH balance, and blood pressure of the body.
What are red blood cells?
Erythrocytes or Red Corpusles. Carry oxygen and contain hemoglobin, oxygen-poor blood is deep scarlet red, oxygen- rich blood is bright red
What are white blood cells?
Leukocytes or White Corpuscles. Fight bacteria and other foreign substances.
What does blood consist of?
Red Blood Cells, White Blood Cells, Platelets, and Plasma
What are Blood Platelets responsible for, and what is another name for them>
Thrombocytes. Responsible for the clotting of the blood
What is Plasma?
The fluid part of the blood. About 90% water. Carries RBCs, WBCs, and blood platelets
Tubular, elastic, thick-walled, carries blood from the heart, carries pure blood all describe what type of blood vessels?
Arteries
Tubular, elastic, thin-walled, carries blood to the heart, carries impure blood, has valves to prevent backflow, closer to the surface describe what type of blood vessels?
Veins
What type of blood vessel takes nutrients and oxygen from ateries to cells? They take waste from cells to veins.
Capillaries
Describe the blood flow through the heart?
- Systemic (general) circulation to the heart
- Pulmonary circulation to the lungs
- Systemic (general) circulation back to the heart, to the body
What/where is the Common Carotid Artery (CCA)?
Supplies blood to head, face, and neck; split into the internal and external carotid arteries
What/where is the Internal Carotid Artery (ICA)?
Supplies blood to brain, eyes, and forehead; branches into supraorbital that supplies blood to parts of the forehead and eyes
What/where is the Supraorbital artery?
Branch of the internal carotid artery; supplies blood to parts of the forehead and eyes
What/where is the Infraorbital artery?
Branch of internal carotid artery; supplies blood to muscle of the eye region