The hippocampus on the other side is responsible for the production of corticosteroids (chemicals that produce physiological responses to stimuli). How the mind creates memories is controlled by the hippocampus. So as to work efficiently, the amygdala and the hippocampus rely on each other greatly. The amygdala regulates the responses to stimuli and the hippocampus uses these responses in the formation of both short-term and long-term memories. Damage to the amygdala or hippocampus causes loss of emotions and memory respectively.
In other words, neurotransmitters are the messages that nerve cells send out, and they cross the gaps between each of the cells. When released by the sending neuron, neurotransmitters travel across the synapse and neuron. Therefore, they influence whether that neuron will generate a neural impulse or not. B) An agonist mimics neurotransmitters functions by binding to receptor sites and stimulating the sending neuron. C) An antagonist does the opposite of agonist.
This form of psychology is involved with the mind-body dispute and researchers how they affect one another. Biological psychology thrives to explain the brain and the nervous system and how they relate to human characteristics such as learning, thinking, feeling, and perception. The biopsychological approach includes an assumption that biological events can cause mental consequences and vise versa. The main assumption is that the mental process and biological events are directly linked together and work as one. The history of biological psychology dates all the way back to the Greeks.
1.2 Describe the key functions of the brain that are affected by dementia. Within the brain there are nerve cells that are known as neurons. These neurons communicate with each other and with other parts of the body. The brain sends signals to the body and to other parts of the brain in the form of electrical impulses aided by neurotransmitters (chemical messengers. The chemical and electrical signals are necessary in controlling bodily functions – for example language, decision-making, memory, personality, behaviour, sensing and interpreting our environment, and controlling muscle movements.
If the cell body dies, the neuron dies. * Axon - This long, cable-like projection of the cell carries the electrochemical message (nerve impulse or action potential) along the length of the cell. * Depending upon the type of neuron, axons can be covered with a thin layer of myelin, like an insulated electrical wire. Myelin is made of fat, and it helps to speed transmission of a nerve impulse down a long axon. Myelinated neurons are typically found in the peripheral nerves (sensory and motor neurons), while non-myelinated neurons are found in the brain and spinal cord.
ch 12 review 1 what are the components of the CNS? The PNS? - CNS consists of the brain and spinal Cordially, PNS consists of all other nervous tissue 2 what is difference between afferent neurons and efferent neurons? Which one is associated with sensory neurons? With motor neurons?
#1 Graded potential starts in the sensory receptors in the skin 2. #5 A synapse in the thalamus creates a graded potential followed by an action potential in the secondary interneuron, Which reaches the cerebral cortex 3. #2 The graded potential triggers an action potential in a sensory neuron 4. #8 the lower motor neuron forms a neuromuscular synapse with the hand muscles, which causes the muscles to contract as he writes the letter 5. #7 In another synapse the neurotransmitter creates a graded potential which triggers an action potential in the lower motor neuron 6.
These features are brought about through chemical/inflammatory mediators released from damaged tissues. The main effects of these mediators are on the blood supply, causing vasodilation (redness and heat) and increased blood vessel permeability that allow plasma proteins and immunoglobulins to pass easily into the tissues. “Pressure or nerve endings from the interstitial fluid and the effect of some inflammatory mediators such as substance P and prostaglandins that cause pain” (Dobson, 1999). In our case inflammation of a toe might be acute or chronic. Acute inflammation is a rapid response to an injurious agent that serves to deliver mediators of host defense—leukocytes and plasma proteins—to the site of injury.
Each neurotransmitter will have a specific effect on specific nerve cells. Neurotransmitters can either be excitatory or they can be inhibitory. When a neurotransmitter is excitatory then they will be able to help communicate a nerve impulse. If a neurotransmitter is inhibitory then it will hinder the communication of the nerve impulse. A good example of a neurotransmitter that is excitatory is known as acetylcholine.
Stimuli’s are what transfers to the brain. The brain is dependent on neurotransmitters to send signals for one part of the brain to another part. The neurotransmitters are let go or released by nerve cells, which is what helps in carrying out cognitive functioning. When brain cells are damaged