Hi guys can you help me with these true and false questions? e) secreted by post

Question

Hi guys can you help me with these true and false questions? e) secreted by post ganglionic fibers. For the following true/false items, mark "A" for true and "B" for false. 78) Sensory input enters the spinal cord through the front (anterior horn) 79) Action potentials can reach speeds of up to 200 miles/hour (360km/h) in gray matter. 80) Hyponatremia can occur when one perspires too much on a hot day but only replenishes water. 81) The iris regulates the amount of light that enters the eyeball. 82) The hippocampus functions primarily in memory 83) The Lumbar plexus gives rise to the femoral nerve 84) Myelin is a combination of a lipid and a protein 85) Action potentials can travel at speeds around 2 mph in unmyelinated tissue. 86) The vitreous humor fills the posterior chamber of the eyeball. 87) Inhibitory impulses tell a neuron not to "relay the message". 88) The lateral rectus attaches to the sclera. 89) The fovea centralis is an area of heightened visual acuity. 90) The brachial plexus gives rise to the sciatic nerve

Explanation / Answer

78) FALSE

Sensory impulses entering the spinal cord through posterior region.

79) TRUE

80)TRUE

Exposure to too much hot with replenishment of water alone dilute sodium content in the blood resulting in low sodium. This is called hyponatremia.

81) TRUE

Size of the pupil regulating the amount of light entering into eyeball. Size of pupil adjusted by Iris.

82) TRUE

Memory & emotions control are the primary function.

83) TRUE

Lumbar plexus is part of lumbo-sacral plexus and it give raise to femoral nerve.

84)TRUE

Myelin is formed by Lipid, Phospolipid & protein molecules.

85) TRUE

86) FALSE

Posterior chamber is filled by aqueous humor fluid.

87) TRUE

88) TRUE

89) TRUE

90) FALSE

Sciatic nerve arised from lumbo sacral plexus.

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