The cerebral cortex is made up of numerous convolutions or gyri and is separated by the sulci. The great longitudinal fissure, which lodges the falx cerebri, divides the cerebrum into two equal halves completely. Centrally the fissure extends up to the corpus callosum. The corpus callosum is the connection between the two hemispheres at the median line. Beside the sulci, there
Each cerebral hemisphere consists of Cerebral cortex Basal ganglia or corpus striatum, masses of gray mater embedded within the hemisphere and not visible superficially The rhinencephalon or olfactory part of the brain in the lower part of hemisphere, portions of which can be seen on the ventral surface are olfactory bulb, striae, trigonum olfactorium and piriform
Parts of Forebrain are- Cerebral hemisphere Cerebral cortex Cortical centre of brain Corpus callosum Hippocampus Rhinencephalon / Olfactory bulbs Interbrain-thalamus Pineal body and Hypothalamus Fornix Basal Ganglia or Carpus striatum
The brain is that part of the central nervous system which is situated in the cranial cavity. Its average weight is about 500 grams in the ox, 1.5 kg. in man, 750 grams in horse and 60 grams in dog. When the brain is seen from above, the parts that are visible are cerebral hemispheres,
The brain and spinal cord are enclosed by three membranous coverings for their protection known as the meninges of brain there are three Meninges of brain are present- Duramater Arachnoid Piamater 1. DURAMATER This is a dense, tough membrane of white fibrous tissue. It has cranial and spinal parts which enclose the brain and spinal cord,
Cerebrospinal system comprises of the central and peripheral nervous system. The central nervous system consists of brain and spinal cord. The peripheral nervous system includes the cranial and spinal nerves and visceral peripheral system. The visceral peripheral system or autonomous nervous system (ANS) is the visceral part of the nervous system. Its peripheral components are
Neurology is the study of nervous system. This system is a complex mechanism by which the organism is brought into functional relation with the environment and the functions of the various systems are co-ordinated The activity of the nervous system controls two spheres of activity. It is through the nervous system that the animal is
Muscles of Larynx are divided in extrinsic and intrinsic muscles Extrinsic Sterno-thyro- hyoideus Thyro-hyoideus (hyothyroideus) Hyo-epiglotticus Intrinsic Crico-thyroideus Crico-arytenoideus dorsalis Crico-arytenoideus lateralis Arytenoideus transversus Thyro-arytenoideus EXTRINSIC MUSCLES Sternothyro- hyoideus This is a long, slender muscle situated on the ventral face of the trachea. Origin: Manubrium sterni. The two side muscles are very close together at their origin and cover trachea at
Muscles of the Pharynx form the muscular wall of the pharynx. Theses are – Stylo– pharyngeus, Palato-pharyngeus, Pterygo-pharyngeus. Aryteno-pharyngeus, Hyo-pharyngeus, Thyro-pharyngeus, Crico-pharyngeus. Stylo– pharyngeus Arises from the great cornu or hyoid bone, near its dorsal extremity. It is the dilator of the pharynx. Palato-pharyngeus Arises from the vertical part of the palatine and body of the sphenoid
Muscles of the Soft Palate are- Palato-glossus Palato-pharyngeus Tensor palati Levator palati Palatinus Palatoglossus It is a narrow, thin muscle arising from the edge of the soft palate. It passes downwards, blends with the middle hyoglossus and ends on the root of the tongue. This muscle narrows the isthmus faucium Palato-Pharyngeus It is placed next
