Circulatory System

The circulatory system brings the body's cells what they need to survive - oxygen and nutrients.

The center of the circulatory, or cardiovascular system, is the heart, a powerful pump organ designed to beat many millions of times over the lifetime of an organism. The heart circulates blood throughout the veins and arteries. Arteries carry oxygen-rich blood away from the heart, providing it to tissues, then returning the depleted red bloods cells back to the heart through the veins for reoxygenation.

We need the circulatory system because without that we would have no blood in our body... we would not get the nutrients we need and we would not be living without the heart.

Sea lions have a closed circulatory system, which is typical for mammals. In this system, blood is contained within vessels and is pumped by the heart, allowing for efficient transport of oxygen and nutrients throughout the body. This adaptation supports their active lifestyle both in the water and on land.

In an open circulatory system, a tubular heart pumps hemolymph into a hemocoel (a system of interconnected sinuses), where chemical exchange can occur with the "bathed" tissues. The hemolymph diffuses back to the heart. This creates a sluggish blood flow because of low pressure & low oxygen content, resulting in low efficiency.

In a closed circulatory system, a muscular heart pumps blood into large vessels that branch into smaller vessels that course through the organs. The blood is confined to vessels and are distinct from the interstitial fluid.

Basically, an open circulatory system is somehow connected to the environment, while the closed circulatory system is just confined in the animal's body.

Yes, shock occurs when the circulatory system fails to deliver sufficient blood and oxygen to the body's tissues, leading to cellular dysfunction. This can result from various conditions, such as severe blood loss, dehydration, or heart failure. Symptoms may include rapid heartbeat, low blood pressure, confusion, and pale or clammy skin. If not treated promptly, shock can lead to organ failure and be life-threatening.

The variety of exercise influences the circulatory system by increasing heart rate, stroke volume, and overall cardiac output, which can be reflected in an EKG reading. During exercise, the heart's electrical activity may show faster rhythms, changes in intervals, and variations in waveforms, indicating increased demand for oxygen. Additionally, different types of exercise can lead to specific EKG patterns, such as ST segment changes or T wave alterations, depending on the intensity and duration of the activity. These changes help assess cardiac function and fitness levels.

During gestation, the three primary germ layers—ectoderm, mesoderm, and endoderm—form. The mesoderm is specifically responsible for developing into the bone, muscle, and circulatory system. The ectoderm contributes to the formation of the skin and nervous system, while the endoderm develops into internal organs such as the digestive tract and respiratory system. These layers arise from the process of gastrulation, which occurs early in embryonic development.

The tiniest tubes in the circulatory system, known as capillaries, are closely related to the air sacs in the lungs, called alveoli. Capillaries surround the alveoli and facilitate the exchange of oxygen and carbon dioxide between the air in the alveoli and the blood. This process allows oxygen to enter the bloodstream while carbon dioxide is expelled from the blood, highlighting the interconnectedness of the respiratory and circulatory systems in maintaining body oxygenation.

A working machine that mimics the circulatory system is a hydraulic system, commonly used in various applications like construction equipment. In this system, hydraulic fluid acts as the blood, flowing through pipes and hoses to transfer power. Pumps function like the heart, circulating the fluid to different parts of the machine, while valves control the flow and direction, similar to how blood vessels regulate circulation. This allows for the efficient transmission of energy and movement, much like the circulatory system supports bodily functions.

A calculator is typically considered a closed system because it operates independently of external influences once it is turned on and does not exchange matter with its environment. However, it can be viewed as an open system when accounting for input from users and output displayed on the screen, as it interacts with external elements during its operation. Overall, its classification can depend on the context in which it is being analyzed.

The circulatory and respiratory systems communicate through the exchange of gases in the lungs. When blood flows to the lungs via the pulmonary arteries, carbon dioxide is released from the blood and oxygen is absorbed into it. This oxygen-rich blood then returns to the heart, which pumps it throughout the body to supply tissues with oxygen. In this way, both systems work together to maintain proper oxygen and carbon dioxide levels in the body.

The circulatory and digestive systems work together to ensure that mammals survive by facilitating nutrient absorption and distribution. The digestive system breaks down food into essential nutrients, which are then absorbed into the bloodstream via the intestinal walls. The circulatory system transports these nutrients to cells throughout the body, providing the energy and building blocks necessary for growth, repair, and overall functioning. Additionally, the circulatory system helps remove waste products produced during digestion, maintaining internal balance and health.

The arterioles are most responsible for determining systemic vascular resistance. And small ateries and Venules are also act as resistance vessels.

Resistance vessels react to the sympathetic and nervous regulations .
When sympathetic n. s. is excited blood vessels constricted and blood floor reduced. Its a method of heat saving in cold weather.

The kidneys would secrete elevated amounts of erythropoietin.

Yes it would be a heart cancer or cancer in the vains

liver

The human respiratory system contains two lungs, symmetrically arranged in the chest, the trachea, which leads from the lungs to the mouth and nose. This simple arrangement allows humans to breathe.

Blood flows from the heart to the arteries and then from the arteries to the

the systemic and pulmonary circulation

The heart and blood vessels are the main organs of the circulatory system. The lungs are part of the respiratory system.

When an injury involving bleeding occurs, your platelets stick to one another and help stop the flow by making scabs and begin healing the wound.

The circulatory system (which is comprised of your lungs, heart, arteries, capillaries, and veins) is the system which distributes blood (and therefore oxygen) through out the body.

your heart has a artery that pumps through the lung and takes out the carbon dioxide which you brath out and replaces it with oxygen that you inhale.