The plasma membrane of a neuron is more permeable to potassi

The plasma membrane of a neuron is more permeable to potassium ion because A. of its positive electrical charge B. there are more non-gated channels for K^+ than Na^+ C. protein molecule cannot exit through the cell membrane D. calcium ions block Na^+ and CI^- channels E. there are more non-gated channels for Na^+ than K^+. The spinal cord A. controls the reticular activating system. B. stores reflexive memory C. forms memory engrams. D. links the peripheral nervous system to the brain. E. is characterized by conscious activity. The conus medullaris A. anchors the spinal cord to the coccyx. B. is a tapered, cone like region immediately inferior to the lumbar enlargement. C. marks the exit of nerves to the upper extremity. D. is located adjacent to the foramen magnum. E. is inferior to the cauda equina. Structurally, the simplest reflex is the A. stretch reflex B. Golgi tendon reflex. C. reciprocal reflex. D. alternating reflex. E. withdrawal reflex.

Solution

ans-8 of its passive electical charges

also called leak channels thay have more pottasium leak channels tha Na leak channels in plasma membrane.

ans-9 the spinal cord link the peripheral nervous system (PNS) in the brain

PNS consist of all parts of nervous system except brain and spinal cord.both are components of CNS.

ans 10- is the tappered cone like region immediately to the lumber enlargement.

A fibrous extension of conus medullaris called the filum terminal.

ans11-stretch reflex

also called deep tandon or myotatic refkex. its a monosynaptic response that is transmitted to the spinal cord