Tag: structure and function of spinal cord

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Questions Related to structure and function of spinal cord

Multiple choice biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

The path of passage of stimulus when you accidentally touch a hotplate is?

  1. receptor $\rightarrow$ brain $\rightarrow$ muscles
  2. muscles $\rightarrow$ spinal cord $\rightarrow$ receptor
  3. muscles $\rightarrow$ brain $\rightarrow$ receptor
  4. receptor $\rightarrow$ spinal cord $\rightarrow$ muscles
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This describes a reflex arc. The stimulus is detected by a receptor, transmitted to the spinal cord via sensory neurons, and then to the muscles via motor neurons to trigger a response.

Multiple choice biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

Destruction of anterior horn cells of spinal cord would result in loss of

  1. Sensory impulses

  2. Voluntary motor impulses

  3. Commissural impulses

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

The anterior horn of the spinal cord contains the cell bodies of motor neurons. Damage to these cells disrupts the transmission of signals to muscles, resulting in the loss of voluntary motor control.

Multiple choice biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

Choose the correct answer from the alternatives given.
Which of the following structures or regions is incorrectly paired with its function?

  1. Brocas regions-screening of information between the spinal cord and the brain regulates arousal and sleep

  2. Medulla oblongata - homeostatic control centres

  3. Cerebellum - unconscious co-ordination of movement and balance

  4. Hypothalamus - production of hormones and regulation of temperature, hunger, and thirst
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Broca's area is a region in the frontal lobe of the dominant hemisphere, usually the left, of the brain with functions linked to speech production.

So, the correct option is 'Broca's region - Screening of information between the spinal cord and the brain regulates arousal and sleep'.

Multiple choice zoology neural control and coordination structure and function of spinal cord the spinal cord spinal cord

White matter of spinal cord contains

  1. Nerve axons

  2. Cell bodies

  3. Clusters of neurons and cell bodies

  4. Motor neurons
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

White matter is a component of the central nervous system, in the brain and spinal cord, and consists mostly of glial cells and myelinated axons that transmit signals from one region of the cerebrum to another and between the cerebrum and lower brain centers.

Multiple choice zoology neural control and coordination structure and function of spinal cord the spinal cord spinal cord

All are true about spinal cord except:

  1. Epidural space around meninges is present.

  2. Pseudounipolar neurons found in ventral root.

  3. Sensory fibre in dorsal root and motor fibre in ventral root.

  4. Lateral horn cell realted cell to ANS formation.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The soma (cell body) of each Pseudounipolar neuron is located within a dorsal root ganglion.
Pseudounipolar neurons are also found in the sensory ganglia of cranial nerves V, VII, IX and X, all mixed-cranial nerves.
 So, the correct option is  'Pseudounipolar neurons found in the ventral root'.