The position of the head with respect to gravity is determined by the

Which of the following is inserted on the calcaneus by the Achilles tendon?

Which of the following is NOT a parasympathetic effect?

Stretch reflexes

The sensory receptor of the stretch reflex is the

Multiple sclerosis is a neurological disorder in which myelin sheaths in the CNS are destroyed. Which of the following neuroglial cells is being damaged in multiple sclerosis?

Synaptic vesicles contain neurotransmitters and are present in the

A neuron within the central nervous system that carries action potentials from one neuron to another is called a(n) ________.

Raising the eyebrows is the action of the ________ muscles.

Which of the following is NOT a symapthetic effect on the body?