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Integumentary and Nervous Systems. The integumentary system, or skin, is the body's first line of defense. It regulates body temperature, protects underlying layers of tissue from sun damage and prevents pathogens from freely entering your body. The integumentary system is also home to millions of nerves that respond to touch, pressure and pain.
- 5 Major Functions of The Cardiovascular System
Body temperature regulation is an often overlooked but...
- How Does The Cardiovascular System Work With The Respiratory System
The cardiovascular and the respiratory system both work...
- How The Skeletal System Works With The Muscular
Working in unison, the joints, bones and skeletal muscles of...
- How Does The Digestive System Work With The Respiratory System
Mouth: You chew your food and pass it into your esophagus....
- Muscle Cell Functions
Smooth muscle fiber is found lining hollow organs throughout...
- Heart Rate and Acetylcholine
The parasympathetic nervous system governs "at rest"...
- What Is The Difference Between Bile Salts & Digestive Enzymes
Pepsin, classified as a protease enzyme, and pancreatic...
- Body Systems
Improve your health, lifestyle, diet & nutrition with body...
- 5 Major Functions of The Cardiovascular System
- Skeletal system. The skeletal system is composed of bones and cartilages. There are two parts of the skeleton; axial and appendicular. The axial skeleton consists of the bones of the head and trunk.
- Muscular system. The muscular system consists of all the body muscles. There are three muscle types; smooth, cardiac and skeletal muscles. Smooth muscle is found within walls of blood vessels and hollow organs such as the stomach or intestines.
- Cardiovascular system. The cardiovascular system is comprised of the heart and the circulatory system of blood vessels. The heart is composed of four chambers; two atria and two ventricles.
- Respiratory system. The respiratory system consists of a series of organs; the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles and lungs (alveoli).
- Set Point and Normal Range
- Maintaining Homeostasis
- Body Temperature
- Blood Glucose
- Blood Clotting
- Childbirth
- Attributions
- References
For any given variable, such as body temperature or blood glucose level, there is a particular set point that is the physiological optimum value. The set point for human body temperature, for example, is about 37 degrees C (98.6 degrees F). As the body works to maintain homeostasis for temperature or any other internal variable, the value typically...
Homeostasisis normally maintained in the human body by an extremely complex balancing act. Regardless of the variable being kept within its normal range, maintaining homeostasis requires at least four interacting components: stimulus, sensor, control centre, and effector. 1. The stimulusis provided by the variable being regulated. Generally, the st...
Body temperature regulation involves negative feedback, whether it lowers the temperature or raises it, as shown in Figure 7.8.3 and explained in the text that follows. The human body’s temperature regulatory centre is the hypothalamus in the brain. When the hypothalamus receives data from sensors in the skin and brain that body temperature is high...
In controlling the blood glucose level, certain endocrine cells in the pancreas (called alpha and beta cells) detect the level of glucose in the blood. They then respond appropriately to keep the level of blood glucose within the normal range. 1. If the blood glucose level rises above the normal range, pancreatic beta cells release the hormone insu...
When a wound causes bleeding, the body responds with a positive feedback loop to clot the blood and stop blood loss. Substances released by the injured blood vessel wall begin the process of blood clotting. Platelets in the blood start to cling to the injured site and release chemicals that attract additional platelets. As the platelets continue to...
Figure 7.8.6 shows the positive feedback loop that controls childbirth. The process normally begins when the head of the infant pushes against the cervix. This stimulates nerve impulses, which travel from the cervix to the hypothalamus in the brain. In response, the hypothalamus sends the hormone oxytocinto the pituitary gland, which secretes it in...
Figure 7.8.1 Nest_Thermostat by Amanitamano on Wikimedia Commons is used under a CC BY-SA 3.0(https://creativecommons.org/licenses/by-sa/3.0/deed.en) license. Figure 7.8.2 Negative_Feedback_Loops by OpenStax on Wikimedia Commons is used under a CC BY 4.0(https://creativecommons.org/licenses/by/4.0/deed.en) license. Figure 7.8.3 Body Temperature Hom...
Amoeba Sisters. (2017, September 7). Homeostasis and negative/positive feedback. YouTube. https://www.youtube.com/watch?v=Iz0Q9nTZCw4&feature=youtu.be Betts, J. G., Young, K.A., Wise, J.A., Johnson, E., Poe, B., Kruse, D.H., Korol, O., Johnson, J.E., Womble, M., DeSaix, P. (2013, April 25). Figure 1.10Negative feedback loop [digital image/ diagram]...
- Christine Miller
- 2020
Oct 19, 2020 · Definition. Body systems are groups of organs and tissues that work together to perform important jobs for the body. Some organs may be part of more than one body system if they serve more than one function. Other organs and tissues serve a purpose in only one body system. Examples include the respiratory system, nervous system, and digestive ...
Mar 30, 2022 · Just over a decade has passed since the first extensive descriptions of type 2 innate lymphoid cells (ILC2s) in mice 1,2,3 (in 2010) and humans 4,5 (in 2011), although there had been hints as to ...
Oct 20, 2023 · Many parts of your body, including immune system organs and cells, work together to keep you healthy. The main components of your immune system are: White blood cells. These immune system cells attack and eliminate harmful germs to keep you healthy. There are many types of white blood cells, and each type has a specific mission in your body’s ...
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The second line of defence is a group of cells, tissues and organs that work together to protect the body. This is the immune system. Cells. The cells involved are white blood cells (leukocytes), which seek out and destroy disease-causing organisms or substances. There are different types of leukocytes. Each of these cell types has a specific ...
