Neural Control and Coordination Test - 1

Alzheimer's disease is an irreversible, progressive brain disorder that slowly destroys memory and thinking skills, and, eventually, the ability to carry out the simplest tasks. According to the cholinergic hypothesis, Alzheimer's disease is caused by reduced synthesis of the neurotransmitter acetylcholine.

Dura mater is the thick and tough outermost layer that lines cranial cavity.

Centre for willpower and personality lies in the frontal lobe of cerebrum.

Optic chiasma is a crossing formed by the optic nerves that is present in the hypothalamus. The crossing over of optic nerve fibres at the optic chiasma allows the visual cortex to receive the same hemispheric visual field from both eyes.

Limbic system is often referred to as emotional brain as it controls emotional behaviour like joy, sorrow, fear, rage etc, food habit and sexual behaviour.

Nerves in depolarised state have positive interior and negative exterior. It happens as more Na⁺ ions enter the cell because of the opening of voltage gated Na⁺ ions channels due to the stimulus.

Theta waves in EEG appear during drowsiness. These are low frequency waves (4-7 Hz) found in persons experiencing emotional stress.

Organ of corti is a ridge like structure present on the basilar membrane. It is composed of several rows of auditory receptor cells called hair cells, supporting cells and a gelatinous sheet like membrane called tectorial membrane that hangs over the hair cells.

Parasympathetic nerves inhibit the secretion of tears from lachrymal glands.

The brief period during which the membrane of the axon cannot be stimulated is called the refractory period.