A shallow groove in cerebrum is called _ and deep groove is called _.
Correct answer: A. Sulcus, Fissure
- A. Sulcus, Fissure
- B. Fissure, Sulcus
- C. Gyrus, Fissure
- D. Fissure, Gyrus
Explanation
In the cerebrum, the outer layer of the brain, there are folds and grooves that increase the surface area. These folds and grooves are classified into two types based on their depth: 1. Sulcus (plural: sulci): A shallow groove or furrow in the cerebrum. Sulci are typically 1-2 cm deep and separate adjacent gyri (folds). 2. Fissure: A deep groove or cleft in the cerebrum. Fissures are typically 2-5 cm deep and separate larger regions of the brain, such as the hemispheres.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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