What are the characteristics of the lymphatic vessels that encourage fluid uptake?

The human immune system is responsible for protecting the body from foreign invaders as well as internal problems. In this lesson, you will learn about part of the immune system known as the thymus.

In this lesson, you will learn about the lymphatic system and the vital role it plays in keeping the cardiovascular system working. You'll discover how the lymphatic system (with its lymphatic vessels and capillaries) quietly works in the background to return leaked fluids back to the blood.

In the lesson, we will explore the lymphatic system and how it functions. You will learn about the parts of your body that make up your lymphatic system and what nutrients are absorbed there.

This lesson will go over the fundamental structure and function of the spinal cord. It will also cover the combining form that pertains to the spinal cord and delineate it from commonly confused combining forms.

This lesson will help you understand the anatomy and function of lymph nodes, and you will learn where lymph nodes are located in your body. A quiz at the end of the lesson will test your knowledge.

Did you know that most of the muscles that control the movement of your foot are actually located in your lower leg? Learn about the muscles below the knee that control the feet and toes in this lesson.

This lesson goes over the definition and major characteristics of the short bones of the human body, and then proceeds to name the various short bones and offer some mnemonics to help remember them.

A woman's body goes through many changes as it prepares for the possibility of pregnancy. Learn about how the uterus prepares for pregnancy by building up its inner lining during this lesson on the proliferative phase of the uterine cycle.

It's summertime, and you're applying sunscreen to avoid sunburn. But did you wonder what sunscreen does and what it protects us from? In this lesson, we'll learn all about UV radiation and some of its effects.

Inside of your abdomen are layers of membranes and different spaces with really weird names. We'll define many of them: peritoneum (including the visceral and parietal parts), retroperitoneum, and mesentery.

In this lesson, you will learn about lymph, a fluid that forms in your body's tissues. You will explore how lymph is produced, how it moves through your body, and why it is important to your overall health. A post-lesson quiz will test your knowledge.

In this lesson, you will explore the function of the paired ureters, as well as how their structure enables them to transfer urine from the kidneys to the urinary bladder.

In this lesson, we'll cover both the primary and secondary organs of the immune system. Specifically, we'll look at the function of each and how they work together throughout our life to protect our body against invaders.

Your skin does more than just cover your body; it has a number of structures like hair and sweat glands. Learn more about the hair that protects your body in this lesson.

Your liver is a big organ with big jobs. It sits on the right-hand side of your body and helps out with many different tasks that keep you healthy, such as cleaning your blood, storing energy, and making bile and cholesterol.

Do you have any phalanges? Are you unsure of what those are? This lesson will define phalanges for you and tell you where they are, how many there are, and what in the world you need them for.