Tag: life processes: control and coordination

Questions Related to life processes: control and coordination

Afferent nerve fibre carries impulses from

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Effector to central nervous system

  2. Receptor to central nervous system

  3. Central nervous system to muscles

  4. Central nervous system to receptors

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Correct Option: B

Endorphin is produced by

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Pituitary

  2. Hypothalamus

  3. Medulla oblongata

  4. Both A and B

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Correct Option: D
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 which helps to coordinate the physical activity. The hypothalamus activates the pituitary to release ACTH which also stimulates the release of endomophins.
So, the correct answer is option D.

In Human beings, the cranium is formed by

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Eight bones of which two are paired

  2. Fourteen bones of which six are paired

  3. Ten bones of which two are paired

  4. Twelve bones of which four are paired

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Correct Option: A

Correct sequence of meninges of brain from outside inside is

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Duramater-Piamater- Arachnoid

  2. Piamater-Duramater- Arachnoid

  3. Arachnoid-Duramater- Piamater

  4. Duramater-Arachnoid- Piamater

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Correct Option: D

Lateral ventricles of brain are connected to the third ventricle by

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Spinal canal

  2. Corpus callosum

  3. Cerebellum

  4. None of the above

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Correct Option: D

Pons connects

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Brain with spinal cord

  2. Cerebrum with cerebellum

  3. Two-lobes of cerebellum

  4. Two cerebral hemispheres

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Correct Option: A

The lining layer of brain ventricles is called

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Ependyma

  2. Endothelium

  3. Epithelium

  4. Mesothelium

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Correct Option: A

In humans the brain reaches its adult size at about

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. 1 Year

  2. 2 Year

  3. 4 Year

  4. 6 Year

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Correct Option: D

Which of the following body part has more number of bone that others?

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Skull

  2. Chest

  3. Forelimb

  4. Pelvis

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Correct Option: A
Explanation:

The human skeleton is the internal framework of the body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together. 

So, the correct option is ‘Skull’.

The term "grey matter" refers to

biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. neurons that are unmyelinated

  2. axons that are myelinated

  3. dendrites that are myelinated

  4. neurons that are myelinated

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Correct Option: A
Explanation:
The grey matter is mainly composed of neuronal cell bodies and unmyelinated axons. In the grey matter, these axons are mainly unmyelinated, meaning they are not covered by a whitish-coloured, fatty protein called myelin. The grey matter serves to process information in the brain.

So, the correct answer is 'neurons that are unmyelinated'.