Cardiovascular system has three main functions: Transport of nutrients, oxygen and hormones to cells throughout our body and removal of metabolic wastes such as (carbon dioxide and nitrogenous wastes). Protections of the human body by while blood cells, antibodies and complement proteins that circulate in the blood and defend our body against foreign microbes and toxic. Clotting mechanisms are also present that protect the human body from blood loss after injuries. Regulation of body temperature, fluid pH and water content of
Homeostasis mechanisms control the body temperature, breathing rate, heart rate, blood glucose levels and many more. The body gives two types of feedback within the body – Negative feedback and Positive feedback. The internal environment is everything that consists within the body everything within the body must be kept within a certain range to allow the cells within the body to still function. Negative feedback is used when the body detects changed in the body and corrects them. These are the steps, Receptors in the nervous system detect a change in the body, Impulses are sent to the control centre, often the brain, and then impulses are sent from the effectors to counteract the change.
When you are exercising different changes occur in the body to try and deal with the change in the environment and the reaction that occurs in the body. I will also explain the homeostatic mechanisms when someone exercises. Homeostasis is for the process of the body to maintain a relatively consistent internal state. The nervous system sends and receives signals about temperature, hydration, blood pressure and much more factors. The endocrine system carries chemical messengers to adjust bodily functions.
A good example of a neurotransmitter that is excitatory is known as acetylcholine. Acetylcholine is a neurotransmitter that helps transmit the impulses between the motor neurons that are responsible for controlling muscles. A good example of a neurotransmitter that is inhibitory is called dopamine. Dopamine will inhibit the nerve impulses in the motor neurons. For a person to have controlled voluntary muscle movement, then the combination of dopamine and acetylcholine is necessary.
The difference is internal respiration happens at the cellular level while external respiration is the actual breaths. 2. What are the key functions overall of the respiratory system? The key functions of the respiratory system is to bring air and blood into the alveolar air sacs so that the air can enter into the bloodstream while the carbon dioxide exits. It also maintains the body’s pH levels and body temperature.
The nervous system sends and receives signals about temperature, hydration, blood pressure and much more factors. The endocrine system carries chemical messengers to adjust bodily functions. During forms of exercise, the body’s internal environment is altered and placed under a considerable amount of stress.
I know I have 3 layers of skin on my body, the Epidermis layer, the Dermis layer, and the Hypodermis layer; which worked together to keep my body cool and isolated. However, when your body gets hot, the structures in the dermis layer expand quickly to keep your body cool. Blood vessels will expand, increasing the flow of cool blood flowing through the skin. Sweat
It is produced by the sweat glands and pours out onto the surface of the skin, the water then evapoarates which removes heat from the skin therefore cooling the skin down. Whenever your body feels a change on the outside, it must account for and adjust functions inside the body in order to maintain its normal state. When you exercise, your muscle tissues demand more oxygen. The body responds to this increased demand by increasing blood flow, which creates higher blood pressure. In order to get more oxygen into your body and into your blood to flow to those muscles, you have to take in more oxygen through breathing.
The two types of consciousness our text discusses; are the perceptual consciousness and the mental structure of our brain. The Perceptual consciousness is the sense that we have when we know what is going on around us and we can communicate and know what we are saying. The other state is when our minds has a suppressed thought or memory of an image in our unconscious that when it is recalled, passes through our preconscious, that filters the unpleasant parts and guards against anything that may cause anxious or anxiety feelings. This is important to understand this relationship between the three states of consciousness because it is necessary for us the understand how our brain functions and why we do the things we do when we are awake and to understand that if we can control our brain function better, we can better control our lives. (Feist & Feist,
This is important as everything in the body has a prime temperature it works at. Enzymes would denature if the body was to overheat and many other problems would occur. The Hypothalamus in the brain is the control centre where is acts as a receiver of messages when temperature changes. It detects the temperature from the blood running through it. The receptors used in negative feedback when it comes to temperature are called thermoreceptors.