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The brainstem (or brain stem) is the stalk-like [1] : 152 part of the brain that interconnects the cerebrum and diencephalon with the spinal cord. [2] In the human brain, the brainstem is composed of the midbrain, the pons, and the medulla oblongata. [3] [1] : 152 The midbrain is continuous with the thalamus of the diencephalon through the ...
The lacrimal bone also contains the nasolacrimal duct. The superior bony margin of the orbital rim, otherwise known as the orbital process, is formed by the frontal bone. The roof (superior wall) is formed primarily by the orbital plate frontal bone, and also the lesser wing of sphenoid near the apex of the orbit. The orbital surface presents ...
The brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sense organs, and making ...
The falx cerebri is a strong, crescent-shaped sheet lying in the sagittal plane between the two hemispheres. [3] It is a dural formation (one of four dural partitions of the brain along with the falx cerebelli, tentorium cerebelli, and diaphragma sellae ); it is formed through invagination of the dura mater into the longitudinal fissure between ...
The cerebral cortex is the outer covering of the surfaces of the cerebral hemispheres and is folded into peaks called gyri, and grooves called sulci. In the human brain, it is between 2 and 3-4 mm. thick, [8] and makes up 40% of the brain's mass. [2] 90% of the cerebral cortex is the six-layered neocortex whilst the other 10% made up of three ...
1: Sphenoidal limbus (anterior margin of the chiasmatic groove) 2: Posterior borders of the lesser wings of the sphenoid. 3: Dorsum sellae of the sphenoid bone. 4: Superior borders of the petrous part of the temporal bone. Base of the skull. Upper surface. (Middle cranial fossa is the centermost of the three indentations, in pink and yellow.)
The lobes of the brain are the major identifiable zones of the human cerebral cortex, and they comprise the surface of each hemisphere of the cerebrum. The two hemispheres are roughly symmetrical in structure, and are connected by the corpus callosum. They traditionally have been divided into four lobes, but are today considered as having six ...
Anatomical terms of bone. [ edit on Wikidata] The mastoid part of the temporal bone is the posterior (back) part of the temporal bone, one of the bones of the skull. Its rough surface gives attachment to various muscles (via tendons) and it has openings for blood vessels. From its borders, the mastoid part articulates with two other bones.