IB DP Biology: HL复习笔记6.3.2 Blood Clotting
Platelets When the skin is cut, microorganisms have an entry point to get into the body The first line of defence is compromised In order to minimise the risk of substantial blood loss and entry of...
IB DP Biology: HL复习笔记6.3.1 Skin
Skin The skin and mucous membranes form a primary defence against pathogens that cause infectious disease Skin is the largest organ of the body and is covered in microorganisms that usually cause n...
IB DP Biology: HL复习笔记6.2.6 Skills: The Blood System
The Structure of the Heart Heart structure The heart has two sides: The left side pumps oxygenated blood around the body in the systemic circulation The right side pumps deoxygenated blood to the l...
IB DP Biology: HL复习笔记6.2.5 The Heart Rate
Heart Rate: Alteration by Nervous System Although the heart muscle maintains a base heart rate via myogenic stimulation, there are several circumstances that can cause an individual's heart rate to...
IB DP Biology: HL复习笔记6.2.4 The Blood System: Cardiac Cycle
Introduction to the Heart Mammalian heart structure The heart is a hollow, muscular organ located in the chest cavity The heart is divided into four chambers The two top chambers are atria The bott...
IB DP Biology: HL复习笔记6.2.3 The Blood System: Double Circulation
Double Circulation The need for a circulatory system All organisms need to transport materials to where they are needed inside their tissues Small organisms (or relatively inactive animals like jel...
IB DP Biology: HL复习笔记6.2.2 The Blood System: Vessels
Arteries Introduction to blood vessels The circulatory system of the human body contains several different types of blood vessel: Arteries Arterioles Capillaries Venules Veins Each type of blood ve...
IB DP Biology: HL复习笔记6.2.1 The Blood System: History
Discovery of the Circulation of Blood NOS: Theories are regarded as uncertain; William Harvey overturned theories developed by the ancient Greek philosopher Galen on movement of blood in the body A...
IB DP Biology: HL复习笔记6.1.4 Skills: Digestion & Absorption
Digestive System Diagram Human Digestive System The human digestive system includes the following: Glands - the salivary glands, and glands in the pancreas that produce digestive juices The stomach...
