KIN 291 Lecture 3Current Lecture I. Lymphoid system: anatomical system that allows up to move LymphII. Right: lymphatic duct and thoracic duct- take into veinsa. Nodes: mass of tissue where lymph is filtered on way to venous systemb. Cyte term for cellc. Absorb fat in the gutsIII. Nervous system:a. Two anatomical divisionsb. Central nervous system (CNS)i. Brain & spinal cordc. Peripheral nervous system (PNS)i. All neural tissue outside CNSIV. Two functional divisions:a. Somatic: voluntary & sensation (touching a surface)b. Autonomic: involuntary & smooth muscle (digestion, cardiac rate, but not under control don’t have to think aboutc. Sympathetic: speeds our process up (increases)d. Parasympathetic: slowing down system (digestion) (decreasesi. Both sympathetic and parasympathetic can happen at the same timeV. Histology: a. Neuron is functional and structural unit i. Cell body with nucleusii. Axon: carry impulses from cell body1. Myelin sheathiii. Dendrite: carry impulses to cell bodyiv. Only one axon with multiple dendritesb. Synapse: communication space between 2 neurons c. Neurogliai. Scaffolding neuronsii. The more myelin the faster we can conduct informationiii. Actinpotential= information is conducted by thisVI. Nervous system- CNSa. Brain and spinal cordb. Contains all cells bodies of nervous systemc. Gray matterd. Contains axon and dendrites (white matter)e. No cell bodies in perphiaral nervous systemVII. Nervous system-PNSa. White matterb. Neurons be different diameterc. Diameter can be function of Myelin sheatd. Formed by schwann cellVIII. PNS:a. Dermatone: product of which nerve is connect to which sensation port of body (skin)b. Myotome: muscle- axonialIX. Digestion on systema. Ingestion (mouth) Secretion: salvia break downPropulsion: goes down esophagusDigestion: mechanicalAbsorptionDefecationX. Thoracic anatomy:a. Regional view:i. Superiorly: jugular notch, sternoclavicular joint, superior border of clavicle, acromion, spinous processes of C7ii. Inferiorly: xiphoid process, costal arch, 12th and 11th ribs, vertebra T12XI. Regionsa. Thoracic wallb. Thoracic cavity: where major organsXII. Thoracic Wall: bone cavitya. 12 pairs of ribsi. 2 false pairs, 2 floating pairs, 8 true ribsb.