Answer: Throbbing, Sharp, Aching, Cramping, Tingling, Crawling
Explanation: Adenocarcinomas are types of cancers that start in mucus producing glands. The pancreas produces hormones and enzymes that help to digest food. About 85% of pancreatic cancers are caused by adenocarcinoma. These tumors starts in the ducts of the pancreas.
Pain is a symptom that can't be ruled out when we are talking about adenocarcinoma. The pain is usually as a result of the tumors pressing on the bones, nerves or other organs in the body. Since the pancreas is a soft tissue, damage to it may cause "throbbing", "sharp" or "cramping" pains. The tumor may also produce chemicals which may damage the nerves and cause "burning", "tingling", "crawling" pains. The tumorcould also press on the nerves causing tingling and burning pains.
Also, the pain could be as a result of nerve changes due to chemotherapy treatment. In this case, the pain descriptors could be "numbing" or "tingling". The pain at the site of injection could be referred to as "burning" as a result of the burning sensation one may feel.
Answer:
D. Organs and muscles require more blood under stress.
Explanation:
Because muscular contractions can have a protracted metabolic expenditure because it has to be adjusted to the demands of the contracting muscles.
I think it is C, since it sounds the most reasonable.
Axons are long nerve processes which carry nerve impulses from the Soma to other neurons, they vary in length but can become almost as long as half of the human body.
The soma (body) of the neuron contains the nucleus which acts as the cell's control centre, these contain many small neurofibrils which project from the nucleus into the dendrites.
Dendrites are short, thick processes which branch out of the soma in a tree like manor. They conduct nerve impulses to the soma.
The three categories of neurons:
Afferent (Sensory) Neurons have the dendrites connected to receptors such as the eyes, ears etc. These receptors change the information they receive into electrical impulses that are transmitted to other neurons. In sensory neurons the axons are connected to other neurons.
Efferent (Motor) Neurons have the dendrites connected to other neurons, the axons are connected to effectors. Effectors are either glands or a muscle cell that is the receiving end of the nerve impulse. The nerve, when excited will cause the effector to react (move, contract, or secrete etc).
Internuncial Neurons have both the dendrites and the axons are connected to other neurons. They are sometimes referred to as connector neurons.
Internuncial neurons are found throughout the body, but especially in the spinal cord and brain.
Properties and characteristics of Neurons:
Normally the electrical impulses (messages) travel through a neuron in only one direction.
The axon may be surrounded by a 'coat' of lipids (fats) and proteins known as the myelin sheath which acts as an insulator.
Neurons are specialist cells that have lost the ability to reproduce themselves. Once the soma of a neuron has died the entire neuron dies, and can never be replaced.
Repair of damaged neurons only occurs in myelinated neurons.
white matter are coloured by myelin, consisting of many neurons supported by neuroglia.
grey matter is soma and dendrites or bundles of unmyelinated axons and neuralgia.
