HBS1HBB Lecture Notes - Lecture 6: Arrector Pili Muscle, Peripheral Nervous System, Anterior Ramus Of Spinal Nerve
Document Summary
> nerve fibres are arranged in bundles = fascicles. > blood vessels run in the connective tissue between the fascicles to supply the nerve fibres. > bundles of fascicles surrounded by connective tissue to make a nerve. > perineurium binds groups of fibres into fascicles. > may wrap many times around the axon. Nerve fibre is referred to as myelinated. > axons may be embedded in schwann cell. > a typical peripheral nerve may have branches to supply: > therefore fibre types present would be gse to the skeletal muscle to cause contraction, Gsa from the skeletal muscle carrying sensory information e. g. about muscle stretch and gve to the smooth muscle in the blood vessels supplying the muscle. > gsa carrying sensory information from the skin e. g. temperature, pain. Gve innervating smooth muscle in the skin (innervating the small muscles that move the hairs in the skin. Arrector pili muscle, sweat glands, smooth muscle in the wall of blood vessels)
