Anatomy & Physiology
All contributors in Anatomy & Physiology
By: Kenneth Rosen
When actomyosin complexes inside skeletal muscle are instructed to contract, they generate force. But the muscle itself does not necessarily shorten when it does work. more...
In: Anatomy & Physiology (general)
Most people remember learning about the basic tastes - sweet, salty, bitter, and sour. Savory was recently added to the list though it is perceived the same way. more...
Small Molecule Neurotransmitters
In: Nervous System
Neurotransmitters are chemicals released by neurons for communication within the nervous system. Small molecules are one of the many that participate as signals. more...
By: Isaac M. McPhee
The Circle of Willis is a vital formation of arteries at the base of the brain which supplies all thought processes with the necessary fuel. more...
In: Digestive System
By: Isaac M. McPhee
The stomach is a marvelous piece of biological engineering - exactly what is needed by the body to break down food with powerful acids while protecting the body. more...
By: Isaac M. McPhee
Human skin is a highly complex, highly important organ, serving many different functions within the body and being absolutely essential for human life as we know it. more...
In: Digestive System
By: Isaac M. McPhee
Saliva serves many purposes within the mouth, such as a digestive aid and acid neutralization, both of which are vital to the human physiology. more...
In: Anatomy & Physiology (general)
By: Isaac M. McPhee
The parathyroid gland is an essential part of the human anatomy, regulating the crucial calcium supply to the entire body. more...
In: Anatomy & Physiology (general)
By: Isaac M. McPhee
Science is still unsure exactly what causes hiccups as well as how to cure them. So what exactly have they learned in their studies? more...
By: Kenneth Rosen
Motor nerves release acetylcholine to make skeletal muscle contract. Activation of acetylcholine receptors in muscle causes ionic flux that ends with muscle contraction. more...
Different Types of Skeletal Muscle
By: Kenneth Rosen
The human body has more than 600 skeletal (or voluntary) muscles. They can be subdivided into groups dependent on whether they contract rapidly or slowly. more...
Skeletal and Other Muscle Types
In: Anatomy & Physiology (general)
By: Kenneth Rosen
Our skeletal muscles respond to voluntary control, but we have numerous other muscles in our bodies which we can't control and this is definitely a good thing. more...
By: Kenneth Rosen
Motor neurons in your spinal cord tell your muscles to contract by utilizing the function of a specialized communication structure, the neuromuscular junction (NMJ). more...
In: Nervous System
By: Kenneth Rosen
Familial Alzheimer's disease cases are only a small fraction of all AD cases, but the genes involved can tell us about some of the important biochemistry. more...
