Nervous system consists of CNS (brain and spinal cord) and PNS. PNS contains sensory and motor neurones. Spinal cord runs vertically along back as nervous tissue
Reflexes are involuntary responses to stimuli without conscious thought. Reflex arc consists of receptor, sensory nerve, interneuron, motor nerve, and effector. Spinal cord controls reflex actions and connects brain with nerves
Babies usually catch up to birthweight within first month. Weight loss up to 10% normal in first 2-3 days. Average length increases to 21.5 inches by one month. Growth depends on pregnancy length, parents' size, and mother's health
Focus on peripheral vision by mentally listing nearby objects. Play video games for 20-30 minutes daily to improve hand-eye coordination. Meditate to clear mind and reduce distractions. Hypnotize yourself to predict clock ticks for 5-10 minutes
Reflex is an automatic, involuntary response to a stimulus. Reflex arc consists of receptors, sensory neurons, interneurons, motor neurons, and muscles
Spinal reflexes are involuntary responses to stimuli in the body. Reflex arcs consist of sensory receptors, afferent fibers, and motor neurons. Reflexes can be monosynaptic (two neurons) or polysynaptic (multiple neurons)