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2021-05-14

What is the role of the effector in a feedback loop Brainly?

What is the role of the effector in a feedback loop Brainly?

Answer Expert Verified If there is a a stimulus, the receptor signals the control center to produce an effector that will alter the environment and bring it to the set point.

What is the stimulus receptor and effector?

The receptor receives information that something in the environment is changing. The control center or integration center receives and processes information from the receptor. The effector responds to the commands of the control center by either opposing or enhancing the stimulus.

What happens when a stimulus is detected?

Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus. Sense organs contain groups of receptors that respond to specific stimuli.

What internal conditions should be controlled?

In the human body, these include the control of:

  • blood glucose concentration.
  • body temperature.
  • water levels.
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Why do internal conditions need to be maintained?

Homeostasis maintains optimal conditions for enzyme action throughout the body, as well as all cell functions. It is the maintenance of a constant internal environment despite changes in internal and external conditions. In the human body, these include the control of: blood glucose concentration.

What are the four conditions that need to be stable to maintain homeostasis?

Regardless of the variable being kept within its normal range, maintaining homeostasis requires at least four interacting components: stimulus, sensor, control center, and effector. The stimulus is provided by the variable that is being regulated.

What are two ways information is sent to control body conditions?

The conditions inside our body must be carefully controlled if the body is to function effectively. The conditions are controlled in two ways with chemical and nervous responses. All control systems include: Cells called receptors , which detect stimuli (changes in the environment).

Why must a good communication system cover the whole body?

This “system” must;- cover the whole body- enable cells to communicate- detect and respond to changes- allow long term and short term responses. What is a stimulus, receptor and effector. – Some receptors are cells such as photoreceptors, which connect to the nervous system.

How is temperature controlled in the body?

Our internal body temperature is regulated by a part of our brain called the hypothalamus. The hypothalamus checks our current temperature and compares it with the normal temperature of about 37°C. If our temperature is too low, the hypothalamus makes sure that the body generates and maintains heat.

What are the two types of effectors?

There are two types of effectors, the muscles (also called “motor effectors”) and exocrine glands (also called “secretory efectors”). All effectors are stimulated by nerves ie are “innervated”.

Are sense organs effectors?

They can detect a change in the environment (stimulus ) and produce electrical impulses in response. Sense organs contain groups of receptors that respond to specific stimuli ….Receptors.

Sense organ Stimulus
Nose Chemicals (in the air, for example)
Eye Light
Ear Sound

What is the meaning of effectors?

ĭ-fĕk’tər. Filters. A muscle, gland, or organ capable of responding to a stimulus, especially a nerve impulse.

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What is the difference between receptors and effectors?

A receptor detects the stimuli and converts it into an impulse and an effector converts the impulse into an action. An example of a receptor is a light receptor in the eye which detects changes in light in the environment. An example of an effector is a muscle.

What are receptors and effectors explain with examples?

Example: The eyes have light receptors which can detect light and the ears have sound receptors which can detect sound. An effector is a part of body which can respond to a stimulus according to the instructions given from the nervous system. Example: Muscles and glands of the human body.

Is insulin an effector?

Insulin affects all three effector organs. b. Postabsorptive — catabolic → breakdown of macromolecules to release glucose*; fatty acids are primary energy source (except in brain).

What are two differences between nervous and hormonal responses?

There are important differences between the two systems as described in the table….Hormones and nerves.

Nervous Hormonal
Transmission of signal By nerve cells By the bloodstream
Effectors Muscles or glands Target cells in particular tissues
Type of response Muscle contraction or secretion Chemical change
Speed of response Very rapid Slower

What is the difference between nervous and hormonal coordination?

Hormones can control the body, and the effects are much slower than the nervous system, but they last for longer. There are important differences between nervous and hormonal control….Hormones and nerves.

Nervous Hormonal
Duration of response Short (until nerve impulses stop) Long (until hormone is broken down)

What are two differences between hormonal communication and nervous communication?

The biggest difference between the two is that the nervous system uses electrical impulses to send signals through neurones, whereas the hormonal system uses chemical messengers transported into blood plasma to target cells. This means that communication is faster when using the nervous system.

Why are hormonal responses longer lasting?

But because nerve impulses can travel much faster than blood-borne substances, nervous system responses are more rapid. On the other hand, hormonal responses are often long-lasting because it takes time (anything between minutes and days) for hormones to be broken down or excreted.

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Which hormones have antagonistic effects?

Antagonistic Hormones

  • Beta cells secrete insulin. When the concentration of blood glucose rises (after eating, for example), beta cells secrete insulin into the blood.
  • Alpha cells secrete glucagon. When the concentration of blood glucose drops (during exercise, for example), alpha cells secrete glucagon into the blood.

Are hormones fast or slow acting?

Thyroid hormones and steroid hormones are insoluble in plasma, act via intracellular receptors to change transcription, are slow-acting and are long-lived. Thyroid and steroid hormones can be converted to more active (or less active) hormones within target tissues.

Which pairs of hormones have opposite effects?

The hormones have opposite actions on the body and are called antagonistic. Insulin and glucagon make up an antagonistic hormone pair; the action of insulin is opposite that of glucagon.

Which is a Nonsteroid hormone?

Most endocrine hormones are non-steroid hormones, including insulin and thyroid hormones. A non-steroid hormone binds with a receptor on the plasma membrane of a target cell. Then, a secondary messenger affects cell processes.

Which hormone is released in response to high blood calcium?

Parathyroid hormone is secreted from four parathyroid glands, which are small glands in the neck, located behind the thyroid gland. Parathyroid hormone regulates calcium levels in the blood, largely by increasing the levels when they are too low.

How do hormones help your body?

Hormones are molecules produced by the endocrine system that send messages to various parts of the body. They help regulate your body’s processes, like hunger, blood pressure, and sexual desire. While hormones are essential to reproduction, they are fundamental to all the systems of your body.

What is the most powerful hormone in the body?

DHEA is the highest circulating steroid present in the human body. It does not have much biological effect on its own but is powerful when converted into hormones such as testosterone and estradiol. DHEA is produced from cholesterol by the outer layer of the adrenal glands.