In this page we have Class 10 Science CONTROL AND COORDINATION Practicec Problems . Hope you like them and do not forget to like , social shar and comment at the end of the page.
Sensory nerves or the receptor nerves |
Motor nerves or the effector nerves |
Mixed nerves |
They are made up of only sensory neurons. For example, the cranial nerves that conduct impulses from the organs to the central nervous system. |
They are made up of only motor neurons. For example, the cranial nerves that conduct impulses from the organs to the central nervous system |
The nerves that are made up of both sensory and motor neurons. For example, all spinal nerves. |
i) |
Central nervous system |
ii) |
Peripheral nervous system |
iii) |
Autonormic nervous system |
Fore brain |
- It is made up of cerebrum, hypothalamus and thalamus |
Mid brain |
It is relay center |
Hind brain |
It consists of cerebellum, pons and medulla oblongata |
i) |
It receives the taste and smell impulses |
ii) |
It coordinates messages from the autonomous nervous system |
iii) |
Controls the heart rate, blood pressure, body temperature and peristalsis |
iv) |
It also forms an axis with the pituitary which is the main link between the nervous and the endocrine systems |
v) |
It also has centers that control mood and emotions |
i) |
It serves as a relay centre for sensory information from the ears to the cerebrum |
ii) |
It controls the reflex movements of the head, neck and eye muscles |
iii) |
It provides a passage for the different neurons going in and coming out of the cerebrum. |
i) |
It is responsible for maintaining the balance while walking, swimming, riding, etc. |
ii) |
It is also responsible for precision and fine control of the voluntary movements. For example, actions like eating are possible while talking or listening. |
i) |
It has the cardiovascular center- It controls the rate and force of heart beat, blood pressure, constriction and dilation of blood vessels |
ii) |
It has the breathing center- It controls the involuntary breathing mechanism |
iii) |
It also controls activities such as sneezing, coughing, swallowing, salivation and vomiting |
i) |
Coordinating simple spinal reflexes |
ii) |
Coordinating autonomic reflexes like the contraction of the bladder |
iii) |
Conducting messages from muscles and skin to the brain |
iv) |
Conducting messages from brain to the trunk and limbs |
i) |
Unconditioned reflex for example: moving away the hand on touching a hot object |
ii) |
Conditioned reflex for example: salivation at the sight of favorite food. |
i) |
They may be proteinaceous or non- proteinaceous (amino acids or steroids) |
ii) |
They are secreted as per need and not stored, only excreted |
iii) |
Their secretion may be regulated by nerves or by feedback effect |
iv) |
They are transported by blood |
v) |
They mostly cause long-term effects like growth, change in behavior, etc |
vi) |
They do not catalyze any reactions |
vii) |
They function by simulating or inhibiting the target organs. |