The Body SystemsHEALTH I I

CHAPTER 15

PG. 406

The SystemsCARDIOVASCULAR

This system moves blood through the body

LYMPHATIC

While this system circulates lymph throughout the body

Cardiovascular System 3 Main Functions:

◦ Provides Nutrients & Oxygen◦ Carries Away Waste◦ Helps Fight Disease

3 Main Components:◦ Heart◦ Blood◦ Blood Vessels

Atrium (p. Atria)-Left and right upper chambers act as rooms during the action

of the heart

Ventricle (p. Ventricles)-Left and right lower chambers act as rooms during the action

of the heart

Septum-Muscular wall dividing the upper and lower chambers

Valves-The heart has 4 valves which act as doors to allow blood to

flow through the heart but not back.

Tricuspid, Pulmonary, Aortic, & Mitral

Cardiac Muscle-Cardiac muscle is an extremely

specialized form of muscle tissue that has evolved to pump blood

throughout the body. Cardiac muscle is only found in the heart and makes up the majority of the

heart’s mass.

The heart beats powerfully and continuously throughout an entire

lifetime without any rest, so cardiac muscle has evolved to have incredibly high contractile strength

and endurance.

Heart -The heart is a muscular organ about the size of a closed fist that functions as the body’s circulatory

pump

What is the purpose of the pacemaker?To send electrical impulses stimulate the atria to contract, forcing blood into the ventricles. The impulses travel through the heart to an area between the ventricles. There they stimulate the muscles of the ventricles to contract, pumping blood out of the heart.

What happens if your “Natural Pacemaker” does not function normally or stops working?

Blood Plasma-

Red Blood Cells-

White Blood Cells-

Platelets-

Blood Types:

Vein (blood vessel)- which brings

DEOXYGENATED blood TOWARDS the heart

Artery (blood vessel)- carry

OXYGENATED blood AWAY from the heart

Capillaries (blood vessel)- Capillaries are the smallest of the

blood vessels and serve as the connection between the arteries and veins of the cardiac system

Heart (muscle)-The heart is a muscular

organ about the size of a closed fist that functions as the body’s circulatory

pump

Lymphatic System Read chapter 15 page 412-413 regarding the Lymphatic System, then answer the questions

below.

1. The lymphatic system helps ______________ infection and provides immunity to disease.

2. How are the cardiovascular and lymphatic systems similar? How are they different?

3. What moves lymph through lymph vessels?

FIGHT

Both systems are a network of vessels that carry liquid. The lymphatic system carries lymph, does not have a pump, and helps fight infections.While the cardiovascular system carries includes the heart as a pump, carries blood through its vessels, and provides cells with oxygen and nutrients.

Lymph is moved by the contraction of both the smooth muscles lining the wall of lymph vesselsand the surrounding skeletal muscles.

Vocabulary1) Pulmonary Circulation-

2) Plasma-

3) Hemoglobin-

4) Platelets-

5) Arteries-

6) Capillaries-

7) Veins-

8) Lymph-

9) Pathogen-

Is the process by which blood moves between the heart and the lungs

The fluid in which other parts of the blood are suspended

The oxygen carrying protein in blood

Types of cells in the blood that cause blood clots to form

Blood vessels that carry oxygenated blood away from the heart

Small vessels that carry blood from arterioles and to venules which empty into veins

Blood vessels that return blood to the heart

Clear fluid that fills the spaces around the body cells

A microorganism that causes disease