Bleeding or spotting later in pregnancy may be a sign of a serious problem, like: 1  Preterm labor. This is labor that happens too early, before 37 weeks of pregnancy. 2  Placenta previa. This is when the placenta lies very low in the uterus and covers all or part of the cervix. 3  Placental abruption.
Afferent definition, bringing to or leading toward an organ or part, as a nerve or arteriole (opposed to efferent). See more.
Noun. 1. afferent neuron-a neuron conducting impulses inwards to the brain or spinal cord. sensory neuron. nerve cell, neuron-a cell that is specialized to conduct nerve impulses. afferent, afferent nerve, sensory nerve-a nerve that passes impulses from receptors toward or to the central nervous system.oun. 1. afferent neuron-a neuron conducting impulses inwards to the brain or spinal cord. sensory neuron. nerve cell, neuron-a cell that is specialized to conduct nerve impulses. afferent, afferent nerve, sensory nerve-a nerve that passes impulses from receptors toward or to the central nervous system.