Tag: community health and hygiene

Quizzes (8) Questions (208)

Questions Related to community health and hygiene

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

Cardiac activity could be moderated by the autonomous neural system. Tick the correct answer.

  1. The parasympathetic system stimulates heart rate and stroke volume.

  2. The sympathetic system stimulates heart rate and stroke volume.

  3. The parasympathetic system decreases the heart rate but increase stroke volume.

  4. The sympathetic system decreases the heart rate but increase stroke volume.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cardiac activity could be moderated by the autonomous neural system. The action of sympathetic nerve fibres increases the heart rate and the stroke volume, while that of the parasympathetic nerve fibres decrease these.

Thus, the correct answer is 'The sympathetic system stimulates heart rate and stroke volume.'

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

Electric potential of various parts of brain is recorded by an instrument called as

  1. Sphygmomanometer

  2. Electrocardiography

  3. Electroencephalography

  4. CT Scan
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An electroencephalogram (EEG) is a test that detects electrical activity in the brain using small, flat metal discs (electrodes) attached to scalp. 

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

An Evoked Potential Studies (EPS) enables us to

  1. Evaluate different sensory functions

  2. Detect clinically silent tensions

  3. Study hearing and vision in children

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Evoked potential studies measure electrical activity in the brain in response to stimulation of sight, sound, or touch. Stimuli delivered to the brain through each of these senses evoke minute electrical signals. These signals travel along the nerves and through the spinal cord to specific regions of the brain and are picked up by electrodes, amplified, and displayed for a doctor to interpret. Evoked potentials studies involve three major tests that measure response to visual, auditory, and electrical stimuli. Evoked potential studies may be used to assess hearing or sight, especially in infants and children, to diagnose disorders of the optic nerve, and to detect tumors or other problems affecting the brain and spinal cord. The tests may also be performed to assess brain function during a coma.

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

The weaker magnetic fields of the brain are studied with the help of 

  1. Electro cardiography

  2. SQUID

  3. Prosthesis

  4. Electro encephalography
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A SQUID (superconducting quantum interference device) is a very sensitive magnetometer used to measure extremely subtle magnetic fields, based on superconducting loops containing Josephson junctions. SQUIDs are sensitive enough to measure fields as low as 5 aT (51018 T) within a few days of averaged measurements. Magnetoencephalography (MEG), uses measurements from an array of SQUIDs to make inferences about neural activity inside brains. Because SQUIDs can operate at acquisition rates much higher than the highest temporal frequency of interest in the signals emitted by the brain (kHz), MEG achieves good temporal resolution.

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

A drug called reserpine was discovered by

  1. Jal Vakil

  2. Paul Ehrlich

  3. Hansen

  4. Alexander Wood
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Reserpine is an indole alkaloid, antipsychotic and antihypertensive drug that has been used for the control of high blood pressure.
Rustom Jal Vakil was the first to pioneer the use of resperine to control hypertension.
Thus, the correct answer is option (A), 'Jal Vakil'.

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

Stethoscope was invented by

  1. René Laennec

  2. Wilhelm Roentgen

  3. Edward Jenner

  4. Joseph Lister
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Stethoscope was invented by Rene Laennec. It is a medical device which is mainly used to hear the sound of heart, intestine, blood flow of the arteries and veins.
Wilhelm Roentgen discovered x rays.
Edward Jenner developed the first vaccine for smallpox.
Lister successfully introduced carbolic acid to sterilize surgical instruments and wounds.
So, the correct answer is option A.
Multiple choice biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

An ECG shows the functioning of the 

  1. Brain

  2. Heart

  3. Lungs

  4. kidneys
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A permanent record of the electric events occurring during a cardiac cycle made on a graph paper in a wave form called electrocardiogram. The electric events include depolarization and repolarization of the auricles and ventricles bringing about their contraction and relaxation. The instrument used to record hearts electric event is named electrocardiograph.