6. What is the relationship of the bronchi, the bronchioles, and the alveoli? The bronchi, bronchioles, and alveoli are all in the lungs and they are all used in the process of breathing. The bronchi is what the trachea branches off into. The bronchioles are the smaller branches that the bronchi divide into.
Who knew that the pharynx is part of the respiratory and the digestive system? That’s right! The part of the trachea we are using to exit from is called the nasal pharynx. The flap of tissue we can all see ahead of me is called the epiglottis. This piece of tissue either flaps over the trachea or the esophagus, depending upon if we are eating, drinking, or breathing.
The respiratory and circulatory systems work together to deliver oxygen to cells of the body (the lungs through air exchange, and the circulatory system by delivery of hemoglobin containing red cells to the capillaries where oxygen is released into the tissues) and removal of carbon dioxide. The circulatory system delivers nutrients absorbed through the walls of the small intestine to other organs (such as the liver, muscles, brain, heart), and delivers oxygenated blood to the digestive system. You breathe in oxygen into your lungs. The oxygen diffuses across the thin walls of the alveoli in the lungs and the thin walls of the blood vessels in the lungs into the blood stream. Here it attaches to the hemoglobin molecules inside red blood cells.
D1 The cardiovascular and respiratory system interlink with each other, this is because they both have a link when it comes to gases exchange. This is because inside the lungs there are air sacs they are called the alveoli there are millions of alveoli, around each alveoli are capillaries which are small blood vessels, as the walls of this is thin carbon dioxide goes into the alveoli from the capillaries and the oxygen goes back into the capillaries which then goes into heart, and the heart pumps blood all around the body. These systems work very closely together, this is to make sure that organ tissues get enough oxygen. Oxygen is needed for cellular function. The air which we breathe in which is kept in the lungs, is the transferred into blood.
The alveoli passes the oxygen to the blood capillary by diffusion (high – low) and this is also how the waste (carbon dioxide) is passed back to the lungs to be breathed out this is why there is only a thin membrane so it can be passed through easily. Also diffusion is the movement of molecules from a region of low concentration until the concentrations are equal. When the air enters the body the upper airway (from the nostrils to the vocal cords), the sinuses either warm or cool the air that has been breathed in depending on the weather you have breathed in e.g. if it is hot it will cool the air down and if it’s cold it will warm the air
It starts with oxygen poor blood being pumped from the right ventricle into the pulmonary trunk. The pulmonary trunk divides into right and left pulmonary arteries that subdivide into the lobar arteries in the lungs. The lobar arteries accompany the main bronchi into the lungs and then branches forming arterioles and then pulmonary capillaries that cling to alveoli. Here oxygen moves from the air sacs to the blood, and carbon dioxide from the blood moves to the air sacs. Next, the pulmonary capillary beds drain into venules which join to form two pulmonary veins exiting each lung.
This path will divide into even smaller branches that are known as bronchioles. At the end of the bronchioles are very small air sacs called alveoli. They deflate during exhalation and inflate when you inhale. The gas exchange of oxygen cycles through the lungs and then the blood stream as the walls of the alveoli shares the same walls with capillaries making the exchange of oxygen for carbon dioxide between the two very easy. The oxygen molecules attach to the red blood cells as the red blood cells move towards the heart, as the carbon dioxide is evacuated from the body by the exhale.
Unit 5, Task 2- Gross structure of all main systems P3 Cardiovascular system- The main functions of this system are to transport nutrients, gases and waste products around the body, to protect the body from infection and blood loss, to help the body maintain a constant body temperature and to help maintain fluid balance within the body. The cardiovascular system works in conjunction with the respiratory system to deliver oxygen to the tissues of the body and remove carbon dioxide. Nutrients like glucose from digested carbohydrate are being delivered from the digestive tract to the muscles and organs that require them for energy. Hormones from endocrine glands are transported by the cardiovascular system to their target organs, and waste
The blood carries the oxygen into the cell, which pass through the entire body. Smaller crustaceans need gas to obtain oxygen. Other crustaceans use their gills. Usually gills are attached to the base of the thoracic appendages. The act of beating the appendages creates a gush of water that flood into the gills.
NAME- IBIFURO SAM-EPELLE CLASS-SS2P SUBJECT-BIOLOGY TECAHER-MRS.SANNI Gas exchange Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: * the area available for diffusion * the distance over which diffusion occurs * the concentration gradient across the gas exchange surface * the speed with which molecules diffuse through membranes. Efficient gas exchange systems must: * have a large surface area to volume ratio * be thin * have mechanisms for maintaining steep concentration gradients across themselves * be permeable to gases. Single-celled organisms are aquatic and their cell surface membrane has a sufficiently large surface area to volume ratio to act as an efficient gas exchange surface. In larger organisms, permeable, thin, flat structures have all the properties of efficient gas exchange surfaces but need water to prevent their dehydration and give them mechanical support.