Find out here the causes and what to do if this condition occurs. Heaviness in chest can definitely make you feel worried because it's often one of many signs of a heart attack. In a heart attack, however the pressure seems to grow big, restricting breathing and causing some pain in the shoulder as well.ind out here the causes and what to do if this condition occurs. Heaviness in chest can definitely make you feel worried because it's often one of many signs of a heart attack. In a heart attack, however the pressure seems to grow big, restricting breathing and causing some pain in the shoulder as well.
Afferent vs Efferent. The nervous system is the director of all body activities. Its major functions include communication and control. The nervous system is made up of two major cells; neuron and neuroglia. Efferent neurons get their input from the other neurons including interneurons and afferent neurons. Unlike efferent neurons, afferent neurons are activated by external stimuli such as vision, hearing, touch etc. â¢ Unlike afferent neurons, efferent neurons involve in muscular control in the body.
(April 2014). In the peripheral nervous system, an afferent nerve fiber is the nerve fiber (axon) of an afferent neuron (sensory neuron). It is a long process (projection) extending far from the nerve cell body that carries nerve impulses from sensory receptors or sense organs toward the central nervous system.April 2014). In the peripheral nervous system, an afferent nerve fiber is the nerve fiber (axon) of an afferent neuron (sensory neuron). It is a long process (projection) extending far from the nerve cell body that carries nerve impulses from sensory receptors or sense organs toward the central nervous system.