Tag: drug, tobacco and alcohol consumption

Questions Related to drug, tobacco and alcohol consumption

The drug that causes chronic psychosis and severe damage to CNS is

evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

  1. Hashish

  2. Charas

  3. Marijuana

  4. LSD

Show answer
Correct Option: D
Explanation:
LSD (lysergic acid diethylamide) is colourless, odourless and tasteless hallucinogenic drug used in the form of tablets, capsules or in liquid.  LSD is one of the most potent mood-changing chemicals and is derived from the extremely poisonous ergot fungus, a mold which grows on rye and other grains. Its effects are unpredictable. A tiny amount can produce 12 hours or more of effects. It affects the nervous system as they interfere the brain's serotonin receptor and inhibit the neurotransmitter stimulation. Therefore people experiences severe, terrifying thoughts and feelings, fear of losing control, fear of insanity and death and feelings of despair while using LSD.
So, the correct answer is 'LSD'

Assertion- Some young people in a village show symptoms of drowsiness, headache, hallucination.
Reason- They have consumed a toxic fungus.

evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

  1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

  2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

  3. Assertion is true but Reason is false.

  4. Both Assertion and Reason are false.

  5. Assertion is false but Reason is true.

Show answer
Correct Option: C
Explanation:

Some of the young people in one of the village may use any drugs or may have become addicted to certain hallucinogens. These drugs resulted in the effects on the individuals which showed symptoms of headache, drowsiness and various other types of hallucination sensations. So, the statement given as assertion is correct. The symptoms shown may be due to drugs and not due to consumption of any type of toxic fungus. The symptoms of consuming toxic fungus may involve numbness, joint pain, fatigue, headache, drowsiness, cough, shortness of breath, etc. So, the reason is false.

Thus, the correct answer is option C. 

Which one of the following statements is false?

evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

  1. Psychoactive drugs have the ability to alter the activity of the nervous system

  2. Adolescence is marked by accelerated physical growth, development of reproductive organs and changes in functioning of the neuroendocrine system

  3. Hallucinogen can alter a person's thoughts, feelings and perceptions

  4. Mescaline is a stimulant

Show answer
Correct Option: D
Explanation:

Mescaline is a hallucinogen and a recreational drug it has a similar effect as the LSD and other hallucinogens and is not a stimulant.

So the correct option is D.

Parameter not affected by sympathetic stimulation of heart?

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. Cardiac output

  2. Stroke volume

  3. Duration of cardiac cycle

  4. Involuntary nature of cardiac musculature

Show answer
Correct Option: D
Explanation:

The involuntary nature of cardiac muscles is the major quality that makes them contract and relax continuously without pausing or without experiencing any fatigue like the rest of the muscles of our body. The parasympathetic nervous system has effects antagonistic to those of the sympathetic nervous system. The parasympathetic stimulation oh cardiac muscles, however, cannot change the involuntary nature of the cardiac musculature.

So, the correct answer is 'Involuntary nature of cardiac musculature'.

The main function of angiotensin is
A. To increase blood pressure
B. Constricting the glomerular arterioles
C. Increases blood volume
The correct ones are given in?

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. A and C

  2. B and C

  3. A and B

  4. A, B and C

Show answer
Correct Option: D
Explanation:

Angiotensinogen produced by the liver is broken into angiotensin I by renin which us an enzyme produced by the kidney. This angiotensin I is the precursor of angiotensin II which often plays a role in the constriction of glomerular arterioles, increase blood flow and blood pressure. 

So, the correct answer is 'A, B, and C'.

Which of the following are the character of cardiac muscles?

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. Striped muscle

  2. Unstriped muscle

  3. Actomyosin

  4. Myoglobin

Show answer
Correct Option: B,C

Which of the following can increase the rate of heart beat?
(A) Sympathetic neural signal 
(B) Parasympathetic neural signal 
(C)Adrenal medullary hormones 
(D) Vagus nerve
(E) Thyroxine hormone
(F) Acetylcholine

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. A,C,E

  2. D,E,F

  3. A,C,D

  4. B,D,F

Show answer
Correct Option: A

The heart keeps on beating throughout the life without fatigue, because

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. In contracts slowly.

  2. It has a long recovery period.

  3. It can use lactic acid as an extra source of energy.

  4. None of the above.

Show answer
Correct Option: B
Explanation:

A refractory period is a period of time during which an organ or cell is incapable of repeating a particular action. 

The refractory period in cardiac physiology is related to the ion currents that, in cardiac cells as in nerve cells, flow into and out of the cell freely. 
After an action potential initiates, the cardiac cell is unable to initiate another action potential for some duration of time. This period of time is referred to as the refractory period, which is 250 ms in duration and helps to protect the heart.

Berger waves are produced by

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. Magnet (7 Tesla)

  2. P.E.T. scan

  3. Brain

  4. Sonography

Show answer
Correct Option: C
Explanation:

Berger waves, also called as $\alpha$-waves are neural oscillations in the frequency range of 7.5-12.5 Hz. $\alpha$-waves are called as Berger waves in the memory of the founder of EEG.
$\alpha$-waves are one type of brain waves detected either by either EEG, electroenccephalography or magnetoencephalography (MEG) and predominantly originate form the occipital lobe during wakeful relaxation with closed eyes.
Thus, the correct answer is option (C), 'Brain'.

Magnetoencephalography is useful in

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. Study of activity of normal auditory area

  2. Depression

  3. Shocked patient

  4. All of the above

Show answer
Correct Option: C
Explanation:

Magnetoencephalography or MEG is a non-invasive technique for investigating human brain activity. It allows the measurement of the ongoing brain activity on a millisecond-by-millisecond basis and it shows where in the brain activity is produced. So, it is helpful in shocked patients.
So, the correct answer is option C.