Tag: physiology

Introduction to the Digestive System – 10.4 – Biol 189

Introduction to the Digestive System – 10.4 – Biol 189

Have you ever wondered why we eat? We eat because we need a source of energy and because our body needs building materials. The digestive system is the system which is responsible for supplying an animal’s body with this energy and with these building materials. We need energy to recharge

Tour of the Human Digestive System (Part 2) – 10.6 – Biol 189

Tour of the Human Digestive System (Part 2) – 10.6 – Biol 189

In the rest of our tour on the digestive system we’ll talk about the organs that have the greatest amount of misinformation out there about them. So we’ll talk about some common misconceptions about the digestive system. So, the next organ on our tour is the stomach. The stomach can

Anatomy and Physiology of the Digestive System

Anatomy and Physiology of the Digestive System

Let’s learn about the digestive system. The digestive system consists of a long tube called the alimentary canal. The canal extends from the mouth to the anus and is about 30 feet long. The tube consists of 4 layers. There is an inner mucous secreting mucosal layer, a submucosa that

7. Insect digestive and excretory systems

Although all insects have common structures in their digestive systems, these structures can be highly variable between species based on the diversity of foods that insects eat. We will use the grasshopper to illustrate the basic principle for these common structures. the insect digestive system is divided into three main

Joints: Crash Course A&P #20

Joints: Crash Course A&P #20

I am so glad that you guys are not five years old! If you were all in, like, kindergarten, the only way I could teach you about your skeletal system would be to sing you that stupid song. You know, “The toe bone’s connected to the foot bone, the foot

Blood flow through the Heart Animation – MADE EASY

Blood flow through the Heart Animation – MADE EASY

The heart is a four-chambered organ with four main vessels which either bring blood to or, carry blood away from the heart. The four chambers of the heart are the right atrium, the right ventricle, the left atrium, and the left ventricle. The great vessels that you see include the

The Integumentary System, Part 1 – Skin Deep: Crash Course A&P #6

The Integumentary System, Part 1 – Skin Deep: Crash Course A&P #6

When you hear about your “organs,” you probably think of your heart, or your liver, or your lungs. Maybe you picture Captain Nemo playing the organ aboard the Nautilus. Why do they have an organ on a submarine? That is – that doesn’t make any sense. But your first associations