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frontal lobe |
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lobe (lōb) 1. a more or less well-defined portion of an organ or gland. 2. one of the main divisions of a tooth crown.lo´bar caudate lobe a small lobe of the liver between the inferior vena cava and the left lobe. ear lobe the lower fleshy part of the external ear. frontal lobe the rostral (anterior) portion of the cerebral hemisphere. hepatic lobes the lobes of the liver, designated the right and left and the caudate and quadrate. insular lobe insula. occipital lobe the most posterior portion of the cerebral hemisphere, forming a small part of its dorsolateral surface. parietal lobe the upper central portion of the cerebral hemisphere, between the frontal and occipital lobes, and above the temporal lobe. polyalveolar lobe a congenital disorder characterized in early infancy by far more than the normal number of alveoli in the lung lobes; thereafter, normal multiplication of alveoli does not take place and they become enlarged, i.e., emphysematous. quadrate lobe 1. precuneus. 2. a small lobe of the liver, between the gallbladder on the right, and the left lobe. spigelian lobe caudate l. of liver. temporal lobe the lower lateral lobe of the cerebral hemisphere.
Frontal lobe The largest, most forward-facing part of each side or hemisphere of the brain. Mentioned in: Aphasia frontal lobe, the largest of five lobes constituting each of the two cerebral hemispheres. It lies beneath the frontal bone; occupies part of the lateral, medial, and inferior surfaces of each hemisphere; and extends posteriorly to the central sulcus and inferiorly to the lateral fissure. It is responsible for voluntary control over most skeletal muscles. The frontal lobe significantly influences personality and is associated with the higher mental activities, such as planning, judgment, emotion, and conceptualization. Compare central lobe, occipital lobe, parietal lobe, temporal lobe. frontal lobe, n the largest of five lobes constituting each of the two cerebral hemispheres. The frontal lobe lies beneath the frontal bone. The frontal lobe significantly influences personality and is associated with the higher mental activities, such as planning, judgment, and conceptualizing. frontal 1. pertaining to the face and forehead. 2. denoting a plane passing through the body from side to side. In quadrupeds it is synonymous with a transverse plane while in bipeds it is synonymous with a coronal plane. frontal abscess in cattle usually results from infection of a dehorning wound, in sheep from infection by Oestrus ovis. frontal bone the paired bones constituting the upper part of the face. See also Table 10. frontal lobe the rostral (anterior) portion of the cerebral hemisphere. frontal nerve block see supraorbital nerve block. frontal plane see dorsal plane. frontal process see comb. frontal sinus see frontal sinus. frontal sinusitis inflammation of the frontal sinus; commonly a sequel to infection of a dehorning wound. Occurs as a chronic disease of unknown origin in bighorn sheep running at range in the wild. lobe 1. a more or less well-defined portion of an organ or gland. 2. one of the main divisions of a tooth crown. caudate lobe a small dorsally located lobe of the liver to the right of the caudal vena cava that frequently embraces the right kidney. ear lobe an elevated area of skin just below the external auditory meatus in birds. frontal lobe the anterior portion of the gray matter of the cerebral hemisphere. hepatic lobe one of the lobes of the liver. occipital lobe the most posterior portion of the cerebral hemisphere, forming a small part of its dorsolateral surface. parietal lobe the upper central portion of the gray matter of the cerebral hemisphere, between the frontal and occipital lobes, and above the temporal lobe. See also parietal lobe. prefrontal lobe the part of the brain rostral to the ascending convolution. quadrate lobe 1. precuneus. 2. a small lobe of the liver, between the gallbladder on the right, and the left lobe. temporal lobe the lower lateral portion of the cerebral hemisphere. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Because the frontal lobes of their brains are still developing, this affects teenagers' ability to develop an argument, plan an essay, solve maths problems and organise ideas into words; Dr Hammond said. The motor cortex in the frontal lobes regulates conscious movements. Areview of his original computed tomography (CT) scan (figure) revealed the presence of a large, destructive lesion that involved the sinonasal area and extended into the anterior cranial fossa, a significant degree of associated vasogenic edema in the adjacent frontal lobes of the brain, and signs of hemorrhage. |
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