Nervous System

The utricle and saccule are both structures found in the inner ear, specifically within the vestibular system. They are responsible for detecting changes in head position and helping to maintain balance and spatial orientation.

The main function of the central nervous system is to process and coordinate information received from the body's sensory receptors. This system consists of the brain and spinal cord, which work together to send and receive signals that control various bodily functions and behavior. Additionally, the central nervous system plays a crucial role in transmitting messages between different parts of the body to maintain homeostasis.

The nervous control of gastric secretion is mainly regulated by the enteric nervous system, which is a network of nerves within the walls of the gastrointestinal tract. The vagus nerve also plays a vital role in stimulating gastric secretion, especially during the cephalic phase of digestion when the brain anticipates food. Additionally, hormonal factors like gastrin, produced by the stomach and duodenum, can also influence gastric secretion.

The presence of theta waves in an adult brain is typically associated with drowsiness, relaxation, or light sleep. It can also occur during deep meditation or creative thinking. They are not typically seen in a fully awake state.

The motor pathway of the autonomic nervous system typically involves two neurons: a preganglionic neuron that originates in the central nervous system and a postganglionic neuron that extends to the target tissue or organ.

It is possible to experience temporary memory loss or confusion after a head injury, but amnesia as commonly portrayed in media is rare. Severe head trauma, such as a concussion or traumatic brain injury, can result in memory problems and cognitive impairments. It is important to seek medical attention if you have hit your head and are experiencing memory loss or confusion.

Information from the peripheral nervous system is carried to the central nervous system by neural cables called nerves. The work groups that neurons cluster into are known as neural networks.

Another name for the parasympathetic nervous system is the craniosacral, which describes the area of the spinal cord where the nerves are located.

Autoreceptors are located on the presynaptic neuron and are activated by neurotransmitters released by that neuron. When neurotransmitter levels reach a certain threshold, autoreceptors inhibit further release of neurotransmitters, providing negative feedback regulation to control neurotransmission and maintain homeostasis in the nervous system.

Data indicate a marked variability and suggest that motor and sensory cortices overlap and are not divided in a simple manner by the central sulcus. The central sulcus is the word that you are looking for.

This approach is known as biological determinism or biopsychological perspective, which focuses on how genetics, neurobiology, and other physiological factors influence human behavior. It emphasizes the role of biological processes in shaping behavior, such as the impact of hormones, brain structures, and genetic predispositions on individual actions and traits.

An automatic nerve response is an involuntary reaction initiated by the nervous system without conscious control. It is rapid and helps the body to respond to stimuli quickly, such as moving your hand away from a hot object without having to consciously think about it. Examples include the dilation of pupils in response to low light levels or the increase in heart rate during physical exertion.

Tobacco can affect the nervous system by increasing heart rate and blood pressure, leading to narrowed blood vessels and reduced blood flow to the brain. Nicotine can also bind to receptors in the brain, altering neurotransmitter levels and contributing to addiction. Long-term tobacco use can have detrimental effects on cognitive function and increase the risk of developing neurological disorders.

There are 31 pairs of nerves that leave the central nervous system - 12 pairs of cranial nerves that exit from the brain and 31 pairs of spinal nerves that exit from the spinal cord.

Cholinesterase breaks down acetylcholine into choline and acetic acid. This process helps to quickly terminate the signal transmission at cholinergic synapses, preventing overstimulation and allowing the synapse to reset for the next signal.

Parasympathetic is a subcategory of autonomic in CNS. They used to said that Parasympathetic control "rest" and "digest" . So whatever activities deal w/ those 2 conditions, you can tell it is controlled by the parasympathetic Nervous system

Though I think the more correct answer is Cerebellum. For Penn Foster students, in the book it is Cerebum

pg. 478 Cerebrum: "The cerebrum communicates with and coordinates the activities of the other parts of the brain." Though according to other sources, and according to two doctors I asked about this. Cerebum is the part of the brain that handles logic, imagination, reasoning ect. And CEREBELLUM is the part of the brain that communicates with the rest of the brain and body.

So although in my opinion, cerebum is incorrect. For Penn Foster Students, the correct answer is

A. Cerebrum

like say this if you put your hand on top of a burning candle the heat will burn your hand and your nerve system will feel it and then it will send a signal up from your hand to your spinal cord and then the massage from your spinal cord will get sent up to your brain telling it what has happened and then the brain will send another massage down our spinal cord into your hand which will tell your muscle to lift up your arm away from the burning candle

Oxytocin is the neurotransmitter most associated with love and bonding. It is often referred to as the "love hormone" or "cuddle chemical" because it is released in response to social bonding activities like hugging, kissing, or being around loved ones. Oxytocin plays a role in strengthening the emotional connection between individuals and promoting feelings of trust and intimacy.

Neurilemma, or Schwann cell membrane, wraps around most axons in the peripheral nervous system, providing insulation and support. This covering is absent in the central nervous system, where axons are myelinated by oligodendrocytes instead.

no, its actually the respiratory sytem and the circulatary system, i mean without breathing in oxygen and without the heart pumping blood round the body we would be dead. these both systems actually work together in a way the blood absorbs the oxygen then the heart pumps the blood round to the varios parts of the body.

While I respect your opinion, I believe it is important to consider that the nervous system controls both of these systems. Perhaps one should look at importance of the systems in terms of which are most vital. These two systems would cease to functions if not for the nerve impulses of the nervous system. It plays one of the most vital roles in homeostasis, and when one is brain-dead the only way that one can remain alive is by creating a sort of faux nervous system. Without its control, the rest of the body would not be able to perform its everyday functions, and would certainly be unable to respond to emergencies. Consider that the body is a company, and the nervous system is the CEO. While other parts of it may be important to its success, they have no job without the boss.

Signals are sent along the nerves of your body to your brain, where they are interpreted. The brain may send signals back instructing muscles to contract or expand, causing one's arm or other appendage to move.

There really is no difference between these two levels of classification of the nervous system, but rather the parasympathetic and enteric division of the nervous system work with the sympathetic division to control smooth muscles, cardiac muscles, and glands in the body. They are both components of the autonomic nervous system.

The sympathetic division of the autonomic nervous system is activated during "fight or flight" responses to stress or danger. This can occur in various situations, such as when encountering a threat, feeling anxious, or engaging in physical exertion.