Neurons Neurons are the basic units of communication in the nervous system. Neurons affect biological functions and behavior. Types of Neurons There are three types of neurons: Afferent or sensory neurons, which are specialized neurons located in the eyes, ears, nose mouth and skin. These neurons are sensitive to light, sound, taste, smell, or other stimuli. They send messages about the environment to the central nervous system (CNS).
This is done through electrical signals which are used in the nervous system. It consists of the Central Nervous System as the processing area and is made up of the brain and spinal cord. While the Peripheral Nervous System detects and sends electrical impulses that are used in the nervous system. The nervous system is the part of the body that coordinates the actions and transmits signals between different parts of the body. In most species it consists of two parts, the Central Nervous System and peripheral nervous system.
Both of them make up a large part of the entire nervous system. Its functions include coordinating the activities between the various parts of the human body. Working in collaboration with the peripheral nervous system, central nervous system plays a fundamental role in controlling the behavior in various multicellular organisms. CNS Functions As we said earlier, the central nervous system comprises the brain and spinal cord, both of which play an important role on physical as well as mental aspects of our life. The brain plays a major role in controlling the various body functions, which include movement, sensation, thinking, memory, speech, etc.
Abstract The situation of Crazy Eddie’s wrestling challenge incorporates a multitude of functions between the brain and body. These functions include the fundamental processes of life, motor, sensory, memory, and emotion. Each brain structures response to stimuli activates specialized areas that send electrochemical signals to communicate with corresponding systems. The nervous system interprets and interacts with the world, and protects the body from danger. The information collected by sensory organs continues through bundles of nerves.
How do the physical properties of the ears help the brain decode and interpret sounds? Sound travels as osccialtion through some medium. The function of ears is to transmit the sound into electric messages which are sent to the brain which perceives and interprets the sound. Ears consist of three parts the outer ear, middle and inner ears. The outer ear consists of the pinna which collects the sound and transmits it to the ear canal, which amplifies the sound and transmits it to the tympanic membrane, the division between the outer ear and the middle ear.
The endocrine system consists of mainly the pituitary and pineal glands in the brain, the thyroid and parathyroid in the throat, the thymus gland which is located near the heart, the adrenal and sexual glands. The hypothalamus also plays an important role in stimulating certain hormones from the pituitary gland. On a lesser degree neurons also secrete hormones into the bloodstream. The pituitary gland lies close to the hypothalamus of the brain and is often referred to as the master gland. This is because it secretes various hormones that control all the other glands in the body when stimulated by the hypothalamus.
Homeostatic Imbalance/Unit 8 Assignment William Thornbury Introduction to Anatomy and Physiology SC121 Instructor: Eric D. Steelman, DHSc(c), MPH, MS, RLATG 10/17/14 Homeostatic Imbalance The endocrine system helps regulate and maintain various body functions by synthesizing (making) and releasing hormones, chemical messengers. The major areas of control and integration include responses to stress and injury, growth and development, absorption of nutrients, energy metabolism, water and electrolyte balance, reproduction, birth, and lactation. The endocrine system is composed of glands that release their hormones directly into the bloodstream for chemical signaling of target cells. Typically, the body synthesizes hormones in one part and transports it to another through the bloodstream or lymph. Endocrine glands have a rich blood supply through which hormones travel to reach their target organs.
Its five main regions help regulate basic life processes, including breathing, pulse, arousal, movement, balance and sleep and the early stage of processing sensory information. The central core consists of the thalamus which relays sensory and motor signals to cerebral cortex, the pons which relay signals from the forebrain to the cerebellum, the cerebellum which deals with motor control, the reticular formation which deals with multiple tasks such as regulating the sleep-wake cycle and filtering incoming stimuli to discriminate irrelevant background stimuli, and finally the medulla which contains the cardiac, respiratory, vomiting and vasomotor centers and so deals with the autonomic (involuntary) functions of breathing, heart rate and blood pressure. (The Central Core, Discovering Psychology) The limbic system exists only in mammals. Its regions mediate motivated behaviours, emotional states, and memory processes. The limbic system regulates body temperature, blood pressure, blood sugar level, and other housekeeping activites.
Sensory, Motor, and Interneuron are the three major classes of neurons. Sensory neurons send information from sensory receptors (e.g., in skin, eyes, nose, tongue, ears) toward the central nervous system. Motor neurons send information away from the central nervous system to muscles or glands. Interneurons send information between sensory neurons and motor neurons. Most interneurons are located in the central nervous system.
This system contains two major types of neurons: sensory neurons (or afferent neurons) that carry information from the nerves to the central nervous system, and motor neurons (or efferent neurons) that carry information from the brain and spinal cord to muscle fibers throughout the body. The Autonomic Nervous System The autonomic system is the part of the peripheral nervous system responsible for regulating involuntary body functions, such as blood flow, heartbeat, digestion and breathing. This system is further divided into two branches: the sympathetic system regulates the flight-or-fight responses, while the parasympathetic system helps maintain normal body functions and conserves physical