Human Blood Functions and Circulation

What are the primary functions of human blood?

• Transporting hormones, nutrients, and gases; maintaining homeostasis.

• Producing digestive enzymes and regulating metabolism.

• Generating electrical impulses for muscle contraction.

• Filtering waste products and synthesizing vitamins.

Which type of blood vessel typically carries oxygen-rich blood away from the heart?

• Veins

• Capillaries

• Arteries

• Lymphatic vessels

What type of blood is typically pumped by the right side of the human heart?

• Oxygenated blood

• Deoxygenated blood

• Mixed blood

• Plasma only

What is the correct pathway for oxygenated blood after it leaves the lungs?

• Lungs → Pulmonary Vein → Left Atrium → Mitral Valve → Left Ventricle → Aortic Valve → Aorta → Body

• Lungs → Pulmonary Artery → Left Atrium → Mitral Valve → Left Ventricle → Aortic Valve → Aorta → Body

• Lungs → Pulmonary Vein → Right Atrium → Tricuspid Valve → Right Ventricle → Pulmonary Artery → Lungs

• Lungs → Pulmonary Vein → Left Ventricle → Mitral Valve → Left Atrium → Aortic Valve → Aorta → Body

Which statement accurately describes the heart's blood supply or a related condition?

• Coronary veins deliver oxygenated blood to the heart muscle.

• An atrial septal defect involves a hole in the muscular wall separating the right and left sides of the heart, potentially mixing oxygen-rich and oxygen-poor blood.

• The heart receives its primary blood supply directly from the blood flowing through its chambers.

• A blockage in the pulmonary artery is the most common cause of a heart attack.