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Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

Autonomic nervous system controls

  1. Voluntary activities

  2. Involuntary activites

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The Peripheral Nervous System is divided into two systems: the autonomic nervous system, which regulates involuntary actions such as breathing and digestion, and the somatic nervous system, which governs voluntary action and body reflexes.
  •  The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. Hence, Autonomic nervous system controls Involuntary activities.
 So, the correct answer is 'Involuntary activities'.

Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

Which of the following is activated in stress condition?

  1. Sympathetic

  2. Parasympathetic

  3. Somatic

  4. Whole ANS
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Sympathetic nervous system is activated in stress condition.
The stress response begins in the brain. When someone confronts a danger, the eyes or ears (or both) send the information to the amygdala, an area of the brain that contributes to emotional processing. The amygdala interprets the images and sounds. When it perceives danger, it instantly sends a distress signal to the hypothalamus.
When someone experiences a stressful event, the amygdala, an area of the brain that contributes to emotional processing, sends a distress signal to the hypothalamus. This area of the brain functions like a command center, communicating with the rest of the body through the nervous system so that the person has the energy to fight or flee.
The hypothalamus is a command center. This area of the brain communicates with the rest of the body through the autonomic nervous system, which controls such involuntary body functions as breathing, blood pressure, heartbeat, and the dilation or constriction of key blood vessels and small airways in the lungs called bronchioles. The autonomic nervous system has two components, the sympathetic nervous system and the parasympathetic nervous system. The sympathetic nervous system functions like a gas pedal in a car. It triggers the fight-or-flight response, providing the body with a burst of energy so that it can respond to perceived dangers. The parasympathetic nervous system acts like a brake. It promotes the "rest and digest" response that calms the body down after the danger has passed.

Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

Which nerve fibres supply the stomach and intestine?

  1. Sympathetic nerve fibres

  2. Parasympathetic nerve fibres

  3. Parasympathetic and sympathetic nerve fibres

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The stomach and intestines receive dual innervation from both the sympathetic and parasympathetic nervous systems to regulate motility and secretion.

Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

A polypeptide that regulates hunger is

  1. Endorphin

  2. Encephalin

  3. Insulin

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Endomorphins are the chemical substance which is present in the neurons. It helps in the perception of pain, reactions to stress, and cardiovascular, respiratory and digestive functions. They are produced within the body so they are known as endogenous. They specifically work by binding to opoid receptors which are mainly found in nervous system and regulates the motor neurons and autonomic nervous system. The regulation of sympathetic and parasympathetic chain helps to control hunger.
So, the correct answer is option A.
Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

Intercellular communication in multicellular organisms occur through

  1. Digestive system

  2. Nervous system

  3. Both-nervous and endocrine systems

  4. Respiratory system only
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Multicellular organisms coordinate their activities using both the nervous system (fast, electrical) and the endocrine system (slower, chemical).

Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

One function of parasympathetic nervous system is

  1. Contraction of rectum

  2. Inhibits salivation

  3. Acceleration of heart beat

  4. Constriction of pupil
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The parasympathetic nervous system, or PSNS, is a part of the nervous system. The nervous system sends signals to and from different parts of the body via nerves. The PSNS is responsible for all the activities that take place when the body is at rest. During a period of flight and fight, the pupils dilate to allow us to see more clearly and make faster decisions. During rest and digest, the PSNS causes the pupils to constrict.

So, the correct option is ' Constriction of pupil '.

Multiple choice zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

Who discovered autonomic nervous system and its components?

  1. Langley

  2. Sherington

  3. Pavlov

  4. Mc Lennan
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

John Newport Langley is widely recognized for his pioneering work in the late 19th century, where he coined the term autonomic nervous system and defined its sympathetic and parasympathetic divisions.