Surgeons were able to reattach Irving’s amputated limb, sewing both the nerves and the blood vessels back together. After the surgery, which proceeded very well, the limb regained its blood supply almost immediately, but the limb remained motionless and Irving had no feeling in it for several months. Why did it take longer to reestablish innervation than circulation?

Q: Surgeons were able to reattach an amputated limb, sewingboth the nerves and the blood vessels back…

A: Replantation is defined as the surgical reattachment of arms, hands, limbs, or finger which was…

Q: An individual has a spinal cord injury superior to the area involved in the patellar reflex circuit…

A: The patellar reflex is a stretch reflex which tests the L2, L3, and L4 portions of the spinal cord.…

Q: If two action potentials come very close to each other in one and the same presynaptic terminal ...…

A: An action potential is interpreted as a rapidly, transitory, and producing alteration of the resting…

Q: What are neurofibril nodes and what is their role?

A: Neurofibrils are thread like structures present in the form of network in the soma and the nerve…

Q: Which part of the brainstem is shown in this image?

A: Need to find the image given in the picture. The brain stem is liable for some essential elements of…

Q: Parkinson disease is the result of decreased levels of theneurotransmitter dopamine in the brain.…

A: DopamineIt is present in the brain of the majority of animals and they belong to a drug family…

Q: Which nerves does not contain the sympathetic fibers?

A: The autonomic nervous system is divided into the sympathetic and parasympathetic nervous system.The…

Q: Why can’t the circle of Willis maintain perfusion of the brain even if there is a blockage in one…

A: The brain is one of the largest and most complex organs in the human body. The brain is surrounded…

Q: Select the best answer or answers from the choices given: The anatomical region of a multipolar…

A: Every person's body mechanism occurs systematically, and these functional activities are governed by…

Q: A patient has been experiencing numbness and pain in their hands and feet during the winter. They…

A: Fine motor control - It include Cutting out shapes with scissors, Drawing lines or circles, Folding…

Q: Which ion is most important for the formation of the membrane potential in a nerve? In what…

A: The differential in charge between the inside and outside of a neuron is called membrane potential,…

Q: What is another name for the visceral motor nervous system?What are the two subdivisions of this…

A: Motor nerves are present in CNS mainly in the spinal cord and transmit signals from CNS to muscle.…

Q: You are observing in a Physical Therapy clinic and a patient presents with back pain. The images…

A: A ‘reflex arc' is the path that nerve impulses follow to trigger a reaction. Because this process…

Q: Why  is  the autonomic nervous system so important in details?

A: Introduction: The nervous system is categorized into the peripheral nervous system (PNS) and the…

Q: Parasympathetic ganglia are located a. in a chain parallel to the spinal cord. b. in the dorsal…

A: The nervous system is highly complex among different organ systems in animals. By transmitting…

Q: Arthur dove off a small cliff into water that was shallower than he expected and he hit his head. He…

A: Introduction: Paralysis is the muscle function loss in the portion of an individual's body. It…

Q: A woman with a history of kidney infections was feeling pain in the skin of the lower part of her…

A: Kidney infection generally begins in the urethra and bladder and extends to our kidneys. Its…

Q: The sympathetic division originates in what area andsegments of the spinal cord?

A: The sympathetic nervous system, which regulates the ‘fight or flight’ responses in the body, is a…

Q: You see a patient who has Guillian-Barre Syndrome, a disorder where the body destroys Schwann cells.…

A: In case of Fuillian Barre syndrome , found combination of elevated proteuns leveld and normal…

Q: Fluoxetine is anantidepressant drug thatpresents an action mechanismrelated to the…

A: Fluoxetin is an antidepressant of selective serotonin reuptake inhibitor(SSRI) class.It is sold…

Q: Three-year-old Jessica proudly shows you how she can wiggle her left big toe in the sand. Where…

A: Anatomy is the study of the structure of the human body. The body is composed of cells that are the…

Q: A customer comes to you at the pharmacy and tells you that she has been to her doctor because she…

A: The nervous system is made up of the central nervous system and the peripheral nervous system: The…

Q: Parkinson disease is the result of decreased levels of the neurotransmitter dopamine in the brain.…

A: Parkinson’s disease is defined as a type of progressive neuron degenerative disease. It is a type of…

Q: the paired ventricle in the brain is...........................

A: The vertebrate nervous system can be divided into the "central nervous system" (CNS) and the…

Q: Shemia's father had a stroke in his early 50s, which initially impaired his ability to walk and use…

A: A stroke happens when the blood supply to portion of the brain is hindered or diminished preventing…

Q: What are sympathetic trunks?

A: The nervous system is defined as a complex system that comprises of networks of nerves and cells.…

Q: Oligodendrocyte , Astrocytes 1. .......................... enhances the velocity of electrical…

A: The brain is the part of the central nervous system along with the spinal cord. It is the hub of…

Q: Which nerves—the afferent nerves or efferent nerves—are also referred to as motor nerves? Why are…

A: You can think of nerves as the signal wires that carry information towards and away from the brain…

Q: Steven had a stroke resulting in his having difficulty speaking. Ruth suffered a severe nerve injury…

A: Injuries in both Steven and Ruth are different as one is related to central nervous system injury…

Q: A player visually scans the field, throws the ball and yells for his teammate to catch the pass.…

A: The central nervous system (CNS) controls most elements of the body and brain. It comprises of two…

Q: Why should autonomic nerves system be studied first?

A: The human nervous system begins very ahead in the embryo's development. Second, the notochord…

Q: the most common neurotransmitter in the peripheral nervous system

A: Peripheral nervous system divided into somatic and autonomic nervous system. Autonomic further…

Q: ich nerves would show deficits if both C8 and T1 were damaged

A: Klumpke's paralysis is a condition in which there is a nerve damage that belongs to the lower…

Q: How many ventricles are in the brain

A: Ventricles refer to a communicating network of cavities present in the brain parenchyma. They…

Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.