What Is Endocrine System And Its Function

What Is Endocrine System And Its Function – The endocrine system is the communication network of the body. It consists of special glands that produce hormones and release them into the blood.

Hormones are chemical messengers that travel through the blood to different parts of the body. They are signals that tell the body to move in a certain way. Hormones are recognized by their target receptors in a “lock and key” system. Each hormone (key) corresponds exactly to its receptor (lock). Only parts of the body that have a receptor (lock) can respond to the hormone (key). This is why hormones affect some parts of the body and have no effect on others.

What Is Endocrine System And Its Function

When hormone levels are imbalanced, the body does not function normally. At this time, problems or diseases may develop.

Adrenal Gland: Function, Hormones, And Disorders

Endocrine glands are parts of the body that produce and release hormones in response to various conditions and signals from inside and outside the body.

A certain amount of hormones are needed to keep the body functioning. Problems and health problems can occur when the hormone is too much or too little. This hormone imbalance can lead to endocrine diseases or conditions.

Hormone levels are constantly regulated to maintain health. Hormones must be kept in balance for the body to function normally. If hormones are out of balance, endocrine diseases and conditions can develop.

Some endocrine glands work alone to regulate hormone levels. These glands work similar to a thermostat on a heater, turning on and off to keep the temperature constant. These glands produce more hormones when levels drop too low and stop producing hormones when levels return to normal.

Understand The Functions And Disorders Of The Endocrine System

Some endocrine glands work together to regulate hormone levels. This often occurs in a feedback loop where hormones from one gland signal another to start (or stop) producing hormones. Now that we’ve looked at how individual neurons work and the roles of different brain areas, it’s time to ask how the body works. manages to put it all together. How do the complex activities in different parts of the brain, the simple firing of billions of interconnected neurons, and the various chemical systems in the body work together to enable the body to respond to and engage with the social environment? daily behaviors? In this section, we will see that the complexity of human behavior is accomplished by the combined actions of electrical and chemical processes in the nervous system and the endocrine system.

The nervous system, the body’s electrical information pathway (see Figure 4.16, “Functional divisions of the nervous system”), consists of nerves –

Consists of the brain and spinal cord, is the main controller of the body’s functions, responsible for interpreting and responding to sensory information.

With their own directives. The central nervous system interprets information from the senses, forms an appropriate response and sends a response to the appropriate system. Everything we see, hear, smell, touch, and taste is conveyed to us as nerve impulses from our sense organs, and every command sent by the brain to the body both consciously and unconsciously passes through this system.

What Are The Main Functions Of Each Of The Following Organ Systems: (1) Respiratory, (2) Urinary, And (3) Endocrine? (consult Figure 39 4 For Help.)

. By far the most common type of neuron, the interneuron is located primarily within the CNS and

. Interneurons enable the integration of multiple sources of available information to form a coherent picture of sensory information transmitted to the brain.

. It is the central pathway of information for the body. Within the spinal cord, the ascending tracts of sensory neurons transmit sensory information from the sense organs to the brain, while the descending tracts of motor neurons relay motor commands back to the body. When a faster-than-normal response is required, the spinal cord can completely bypass the brain and do its own processing. It is a reflex

. Reflexes are triggered when sensory information is strong enough to reach a certain threshold and interneurons in the spinal cord act to send messages back via motor neurons without passing the information on to the brain (see Figure 4.17, “Reflex”). When you touch a hot stove and immediately pull back, or when you instinctively reach for your cell phone before it breaks and falls, reflexes in your spinal cord order the necessary responses without your brain knowing what’s going on.

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Figure 4.17 Reflex. The central nervous system can interpret signals from sensory neurons and respond to them very quickly through motor neurons without the need for brain involvement. These quick responses, known as reflexes, can reduce the damage we might experience from touching a hot stove, for example.

. As you can see in Figure 4.18, Autonomic Nervous System, the peripheral nervous system itself is divided into two subsystems, one that controls internal responses and one that controls external responses.

The division of the PNS that controls the internal functions of the human body, including heart rate, breathing, digestion, salivation, sweating, urination, and sexual arousal

. Many actions of the ANS, such as heartbeat and digestion, are automatic and beyond our conscious control, but others, such as breathing and sexual activity, can be controlled and influenced by conscious processes.

The Endocrine System Medical Poster Diagram Doctors Office School Classroom

Including skeletal muscles, skin, and sensory organs. The somatic nervous system consists mainly of motor nerves, which are responsible for sending signals to the brain for muscle contraction.

By activating organs and glands in the endocrine system, it participates in preparing the body to respond to behavior, especially stress.

It tends to calm the body by slowing the heart and breathing and allowing the body to recover from activities caused by the sympathetic system.

. The sympathetic and parasympathetic divisions normally work in opposition to each other, with the sympathetic division acting a bit like the gas pedal on a car and the parasympathetic division acting like the brakes.

Endocrine System Concept Map

Figure 4.18 Autonomic nervous system. The autonomic nervous system has two divisions: the sympathetic division supplies the body with energy, prepares it for action. The parasympathetic division works to calm the body, allowing it to rest. [Long Description]

Our daily activities are controlled by the interaction of the sympathetic and parasympathetic nervous systems. For example, when we get out of bed in the morning, without the action of the sympathetic system, which automatically increases blood flow in the body, we would experience a sharp drop in blood pressure. Similarly, after we eat a large meal, the parasympathetic system automatically sends more blood to the stomach and intestines, allowing us to digest the food efficiently. And maybe you’ve had the experience of not being hungry at all before a stressful event like a sports game or an exam (when the sympathetic division is primarily active), but then suddenly feel hungry because the parasympathetic takes over. . The two systems work together to maintain vital bodily functions, resulting in homeostasis,

The nervous system is designed to protect us from danger by interpreting and responding to stimuli. But the main function of the sympathetic and parasympathetic nervous systems is to interact with the endocrine system.

. When hormones released by one gland reach receptor tissues or other glands, these receptor receptors can trigger the release of other hormones, resulting in a series of complex chemical chain reactions. The endocrine system works together with the nervous system to influence many aspects of human behavior, including growth, reproduction, and metabolism. And the endocrine system plays an important role in emotions. Because the glands are different in men and women, hormones also help explain some of the behavioral differences observed between men and women. The major glands in the endocrine system are shown in Figure 4.19, Major Glands of the Endocrine System.

Endocrine System: Structure And Function

Figure 4.19 The main glands of the endocrine system. A man is shown on the left, a woman on the right.

A small pea-sized gland near the center of the brain is responsible for controlling the body’s growth

, but it has many other effects that make it central to the regulation of behavior. The pituitary gland secretes hormones that affect our response to pain, as well as hormones that signal the ovaries and testes to produce sex hormones. The pituitary gland also controls ovulation and the menstrual cycle in women. The pituitary gland is sometimes known as the “mother gland” because it has such a significant influence on other glands.

, a hormone that helps regulate the sleep-wake cycle; and the thyroid and parathyroid glands responsible

The Endocrine (or Hormonal) System

Determining how quickly the body uses energy and hormones, controlling the amount of calcium in the blood and bones

Produces hormones that regulate salt and water balance in the body and participates in metabolism, immune system, sexual development and functions.

) when excited, threatened or stressed. Epinephrine and norepinephrine stimulate the sympathetic division of the ANS, causing increased heart and lung activity, dilation of the pupils, and an increase in blood sugar, which gives the body a surge of energy to respond.

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