Additional causes of bleeding in early pregnancy include: 1  Cervical changes. During pregnancy, extra blood flows to the cervix. 2  Infection. Any infection of the cervix, vagina, or a sexually transmitted infection (such as chlamydia, gonorrhea, or herpes) can cause bleeding in the first trimester.
A: Afferent neurons are special nerve cells that are responsible for carrying nerve impulses from the receptors to the central nervous system. Efferent neurons carry nerve impulses from the central nervous system to the muscles and glands. Continue Reading.
Afferent and efferent divisions are : Sensory ( afferent ) Division Somatic afferent nerves - carry impulses from skin , skeletal muscles , and joints to the CNS Visceral afferent nerves - transmit impulses from visceral organs to the CNS Motor ( efferent ) Division Transmits impulses from the CNS to effector organs , muscles and glands , to effect ...