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प्रश्न
Differentiate between voluntary and involuntary movements.
उत्तर
Differences between voluntary and involuntary movements:
| Voluntary movements | Involuntary movements |
| 1. Voluntary movements are according to our will. | 1. Involuntary movements are not according to our will. |
| 2. They are caused by the cerebrum but controlled by the cerebellum. | 2. They are caused by the medulla oblongata and some part of the midbrain. |
| 3. They are under the control of the central and peripheral nervous systems. | 3. They are under the control of the autonomic nervous system. |
| 4. Voluntary movements occur when needed and are under our control. | 4. Involuntary movements occur continuously and are not under our control. |
| Examples: Eating, walking, reading | 5. Examples: Breathing, heartbeat, digestion |
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संबंधित प्रश्न
What does CNS stand for? Which part of CNS : (a) consists of two cerebral hemispheres, and (b) has spinal nerves attached to it?
The human body contains a large number of cells A which are very long and branched, and look like electric wires. The longest branch of this cell is B whereas there are many small branches C. Any two A cells do not join to one another completely in the human body. There is a microscopic gap D between every pair of adjacent A cells through which electric impulses can pass by the release of a chemical substance.
(a) What are cells A?
(b) What is the name of (i) branch B, and (ii) branches C?
(c) What is the microscopic gap D known as?
(d) What is the function of cells like A in the human body?
(e) The cells A are of three types. name the three types.
Put a tick mark (✓) against the correct alternative in the following statement:
The structural and functional unit of nervous system is a
Fill in the blank:
Sense organs have special cells called ____________ for picking up information and transmitting it to the nerves.
State whether the following statement is true (T) or false (F):
Retina is present on the outer surface of the eye.
Multiple choice question. Tick (✓) the correct choice:
Nervous system in humans consists of
Fill in the blank:
The three main parts of the brain are ................................ and ............................
State whether the following statement is true (T) or false (F):
Cerebellum maintains the balance of the body.
Complete the following table by filling in the blank spaces.
| Structure | Function |
| Yellow Spot | |
| Transfers impulse from inner ear to brain | |
| Helps to change the focal length of the eye lens | |
| Spinal cord | |
| Oval window | |
| Dynamic equilibrium |
Choose the correct answer.
Synapse is a close proximity of _______________
Explain the term: Motor nerve
Give Technical Term:
The neuron which conducts impulse from the central nervous system to the organs.
Give Technical Term:
The part of the central nervous system in which the gray matter is located on the outer side and the white matter on the inner side.
Complete the following sentence with appropriate word :
A bundle of axons enclosed in a tubular sheath is called _________.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with the suitable idea given in Column ‘I’.
| Column I | Column II | ||
| (i) | Auditory canal | (a) | Channels pressure waves of air into the middle ear. |
| (ii) | Auditory (Eustachian tube) | (b) | Collects pressure waves of air. |
| (iii) | Auditory nerve | (c) | Converts pressure waves of air into vibrations of bone. |
| (iv) | Incus | (d) | Dissipates sound waves. |
| (v) | Malleus | (e) | Equalizes pressure between the middle ear and the atmosphere. |
| (vi) | Oval window | (f) | Provide information about the spatial orientation of the head. |
| (vii) | Pinna | (g) | Transfers vibrations from a bone to a fluid. |
| (viii) | Round window | (h) | Transfers vibrations from a bone to a membrane. |
| (ix) | Semi-circular canal | (i) | Transfers vibrations from a bone to a bone. |
| (x) | Stapes | (j) | Transfers vibrations from a membrane to a bone. |
| (xi) | Tympanic membrane | (k) | Transmits action potential to the auditory cortex. |
What is the function of the red nucleus?
Vomiting centre is located in ______
Which of the following parts is joined by the corpus callosum?
Which part of brain controls vomiting?
How many spinal nerves are there, and to which groups they belong?
