That topic is all about Nervous System ;)

4. Nervous system is the chief controlling and
coordinating system of the body. It controls
and regulates all activities of the body,
whether voluntary or involuntary, and adjusts
the individual (organism) to the given
surroundings

6. The nervous system is broadly divided into two parts.

7. The nervous system is broadly divided into two parts.
1.) Central Nervous System (CNS)
2.) Peripheral Nervous System (PNS)

8. Central Nervous System (CNS)

9. Central Nervous System (CNS)

10. •Brain or encephalon, which occupies cranial cavity, and contains the higher governing centers.
Central Nervous System (CNS)
Brain or encephalon, which occupies cranial cavity,
and contains the higher governing centers.

11. Central Nervous System (CNS)
Brain or encephalon, which occupies cranial cavity,
and contains the higher governing centers.
Spinal cord or spinal medulla, which occupies upper
two-thirds of the vertebral canal, and contains
many reflex centers.

14. Cerebrospinal nervous system The portion of the nervous
system in vertebrates comprising the brain, cranial nerves,
spinal cord, and the spinal nerves concerned with
transmission of impulses from sense organs
to the voluntary muscles.

15. Cerebrospinal nervous system The portion of the nervous
system in vertebrates comprising the brain, cranial nerves,
spinal cord, and the spinal nerves concerned with
transmission of impulses from sense organs
to the voluntary muscles.
Peripheral autonomic nervous system affects heart rate,
digestions, respiratory rate, salivation, perspiration,
papillary, dilation, urination, and sexual arousal.

17. Salaya