Human Anatomy and Physiology
Conditions and Diseases
Head, Ears, and Nose
The center of our nervous system and daily thoughts, the brain is a complex, magnificent organ. Ask questions about parts of the brain and their functions here.
Asked in Medical Terminology, Spinal Cord, Brain
What is the medical term meaning membranes surrounding the brain?
The meninges (from the Greek meninx, meaning "membrane") cover and protect the brain and spinal cord. The meninges have three layers: 1) the dura mater, 2) the arachnoid, and 3) the pia mater. The dura mater is the outermost layer covering the central nervous system. The arachnoid (from the Greek arachne, meaning "spider") is a web-like network of collagen and elastic fibers. The innermost layer of the meninges is the pia mater. The pia mater is firmly attached to the neural...
What affects the accuracy of memory?
Human memory is an amazing thing, but there are many ways memory can fail. Here is a brief explanation of Daniel Schacter's "seven sins of memory." Three sins of forgetting: Encoding failure from absent-mindedness. If we paid attention to every single detail it would be really overwhelming, so oftentimes certain information never enters our long-term memories and thus we cannot recall it later. Storage decay over time, which is called transience. Oftentimes the memory we have successfully stored is just forgotten later on. This is...
Asked in Health, Endocrine System, Nervous System, Brain
How fast are hormonal responses?
Slower than nervous responses. Varies according to what hormone, for example the hormone epinephrine (adrenaline) works almost instantaneously to initiate increased mental alertness among other things. Some hormones take longer to take effect but most take action relatively quickly seconds -> hour ...
Asked in Brain
What is the largest part of the brain?
The cerebrum is the largest and most developed part of the brain. It, unfolded, has the surface area of four school desks. It makes up 85% of the brain's weight. It's the center of judgment, reasoning, complex learning, abstract thinking, association, interpretation of sensory information, speech, learning and memory, and also controls voluntary actions, like how you think and move. It's made of two halves, the left and right cerebral hemispheres. ...
Is DAI brain damage curable?
Yes, it is curable with a miracle from God Almighty, by His Grace. Other countries may refer to Him by a different name. Prayers are His means of our communicating with Him. He knows our prayers before we say them to Him (whether they be in silent thought from our hearts or out loud in privacy or public). Cure being from Him direct through His Supernatural Self, or His Supernature Flawless Self performing through those He has chosen to Perform His Cure...
Why aren't elephants smarter than humans?
Because they have no ability to think and act as humans. Answer: The intelligence of elephants is well known. Their brains are as complex and larger than those of humans. They exhibit many traits of human intelligent behaviour: grief learning allomothering mimicry art play a sense of humor altruism use of tools compassion cooperation self-awareness sense of family and tribe memory language The question is then"Are they smarter than humans." which presupposes that humans are the benchmark of intelligence. In that elephant intelligent behaviour exceeds human behaviour in many aspects in that they: don't kill or murder are loyal can survive...
Do women like men with out foreskin?
Depends on the woman. I happen to really like men - so I have to say that I think they are perfect the way they are made...foreskin intact. I don't see how anyone can truly love & appreciate the male gender/male body & then want them to cut off a part of their genitals to be "good enough". Makes zero sense to me. My husband is circed & I am fine with that because I love HIM. I would not rule...
Asked in Head, Ears, and Nose, Headaches, Brain
What does it mean if you can feel a lump on the right side of your skull above your ear?
Answer If it is new, any new lump anywhere on your body should be discussed with your doctor. If it is painful or soft, it could be anything from a tumor to an ingrown hair. If you have been in a car accident and had glass cuts on your head, it is possible to have pieces of glass work it's way back to the surface of the skin even years later. If it is hard, does not move then you press on...
Do ants have brains?
Ants have a main brain and several smaller brains that run along the length of their bodies called, "ganglia". The ganglia are little assistant brains to the main brain. The brain inside the ants head controls things like smell, sight and touch, but the smaller brains control, to some degree movement of the ant. Have you ever noticed that an ant will continue to twitch if you step on it? Even if the head is separated from the ants body, the...
Asked in Conditions and Diseases, Brain, Opiates
How long does it take to recover from a medically induced coma?
The coma itself, if medically-induced can usually be quickly reversed (in an adult who is otherwise fairly healthy) by giving medication to counteract the drug used (e.g., Narcan for opioid narcotics) or by allowing the drug used to "wear off", since these are usually short acting drugs if not continually given in repeat doses. Depending on the reason for induction, full recovery may require additional treatment for the other conditions present even after the patient is fully brought out of the coma...
Asked in Health, Head, Ears, and Nose, Brain
What may cause numbness in your right side of head while sitting down?
It could your sciatic nerve or a pinched nerve in your back. You should see your doctor and then possibly a Chiropractor. ...
Asked in Brain
Why are fingers more sensitive to touch than your elbow?
Fingers are more sensitive to touch than your elbow because your fingertips have a thinner layer of skin and don't have as big as a bone. Fingers are our nerve extremities acts as a sensor to feel touch sensitivity. since the electricity tendency to travel through sharp object/conductor, our nerve ends carry electrical pulse to brain easily. ...
Asked in Depression and Bipolar Disorder, Brain
What is another name for bipolar?
Manic-depression. Bi-Polar Disorder can be difficult for the individual experiencing the symptoms and for their friends and family. Bipolar Disorder is a complex illness and there is a range of severity. There are many different symptoms -- and several different types -- of bipolar disorder. The most common symptoms of the disorder are dramatic and unpredictable mood swings. The various types of bipolar disorder range from mild to severe. If you think that you or someone you know is expereincing symptoms of Bi-polar...
What are the major organs of the nervous system?
Answer The main organs of the nervous system are the brain and the spinal cord. The nervous system controls the actions and feelings of all parts of your body. It helps you have thoughts, feelings, and memory. Example: You touch a cactus when you are a baby. Your hand senses it and sends a message to the brain. The brain signals your hand to stop touching it. You can feel the pain because of the nervous system and it reminds you to not...
Asked in Consumer Electronics, Mobile Phones, Brain
Is there any technology to control the brain waves?
There is a technology called brainwave entrainment that uses audio to alter or influence brainwave activity. Basically, you listen to a special audio CD with a pair of stereo headphones. In one channel a particular frequency is introduced, and in the other a slightly different frequency is played. The difference between the two signals is called a beat frequency. The developers say that the brain interprets this beat frequency, and causes brainwave synchronization at the beat frequency between the two hemispheres of the...
Asked in Brain
What is the function of the medulla oblongata?
The medulla oblongata is the most vital part of the brain because it is the control center for breathing, blood pressure and heart beat among other involuntary body functions not under conscious control. Because these functions are necessary for human life, damage to the medulla oblongata can be fatal. There is only one medulla oblongata in the brain. The medulla connects the brain and the spinal cord, and is the lower half of the brainstem. Respiration - chemoreceptors Cardiac center - sympathetic, parasympathetic system Vasomotor...
Asked in Brain
What in the brain is responsible for wakefulness?
The reticular formation is a part of the brain that is involved in actions such as awaking/sleeping cycle, and filtering incoming stimuli to discriminate irrelevant background stimuli. It is essential for governing some of the basic functions of higher organisms, and is one of the phylogenetically oldest portions of the brain. ...
What is foci of T2 hyperintensity in the subcortical and periventricular white matter?
This phrase is a statement that would be used by a radiologist when reviewing the results from a MRI. Breaking down the phrase by individual parts: T2 - An indication of the type of scan that was done. In a T2-weighted scan, areas that are fluid-filled appear bright, while areas that are fatty appear dark. A T1 scan would show the opposite results. Hyperintensity - An indication of a bright region on the scan. Foci of T2 Hyperintensity, therefore, means "focal points, or concise areas,...