Efferent nerve fibers - Study guides, Class notes & Summaries

where does the spinal cord end in an adult L1-L2 what is inferior to the end of the spinal cord cauda equina how many spinal nerves for each section 8 cranial, 12 thoracic, 5 lumbar, 5 sacral, 1 coxxygeal why are the spinal nerves mixed nerves? because they contain both motor and sensory 4 parts of gray matter anterior horns, posterior horns, lateral horns, gray commisure what in the gray matter contains the motor nuclei? anterior horns what in the...

Spinal nerve correct answers a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body dorsal root ganglion correct answers a cluster of cell bodies of first-order sensory neurons located along a spinal nerve Dorsal root correct answers he sensory branch of each spinal nerve, which consists of the central processes of sensory neurons just prior to entering the spinal cord Ventral root correct answers he motor branch of each spinal nerve, whi...

BSC2085 Exam 3 Questions and Answers 100% Pass What does the endocrine system communicate by? - Answer- means of chemical messengers (hormones) secreted by blood how does the nervous system send messages from cell to cell? - Answer- 1. Receives stimuli from environment and transmits messages to CNS 2. The CNS processes the information 3. CNS issues commands to muscle and gland cells to carry out response What are the 2 division of the nervous system? - Answer- CNS (brain/spinal cord) PN...

BIO 201 Exam 4 Graded A+ ___ ___ controls how emotions are expressed (seat of judgement) ️Prefrontal Cortex ___ cells form the axons of the olfactory tracts ️Bulb -lead to temporal lobe, amygdala, hypothalamus emotional responses to odors; cough, salivate, sneeze or vomit in response to odors -cerebral cortex sends feedback to bulb cells -- changing quality & significance of odors when hungry ___ is perception of intensity of sound energy ️Loudness -how much the air molecules are c...

ASU BIO 201: EXAM 3 QUESTIONS AND ANSWERS ALREADY PASSED 2 main division of the nervous system and organs of each Central Nervous System (brain and spinal cord) Peripheral nervous system (nerves and ganglia, all the nervous system except brain and spinal cord) 2 main pathways of ATP synthesis Anaerobic fermentation: cells make little ATP w/out oxygen, produces lactic acid (a major part in muscle fatigue) Aerobic respiration: produces more ATP, less toxic end products (CO2 and water...

Nociceptors - pain receptors - found in all tissues except cns - tissue injury activates them to transmit pain information to somatosensory system Chemical mediators of pain - prostaglandins - bradykinin - substance p Moa of chemical mediators of pain - attach to nociceptor membrane and open sodium channels - move to afferent nerve fibers, carrying impulses to spinal cord (away from injury) - impulse sent to somatosensory cortex, limbic system, frontal/parietal lobes - pain is perce...

Anatomy and Physiology Bio 252 - Lecture Exam 1 Questions and Correct Answers BIOS 252: | BIOS 252 ANATOMY & PHYSIOLOGY II (BIOS252)Anatomy ~~~ The study of structure Physiology ~~~ The study of function Homeostasis ~~~ Adjusting to maintain a constant internal environment that makes possible optimal functioning 4 General Types of Tissue ~~~ 1. Connective 2. Muscular 3. Nervous 4. Epithelial Organ ~~~ When two different types of tissue work together Central Nervous System ~...

Neurology correct answers - Encode concept into verbal symbol (idea becomes a word) - Plan out the sequencing of muscle contraction - Initiate movement Respiration correct answers Driving force (energy source) Phonation correct answers Sound generator Articulation correct answers Sound filter/shaper Planes of Orientation correct answers - Coronal: separates front from back - Sagittal: separates left from right - Transverse: separates top from bottom Directional Terms correct ...

What type of muscle fiber fiber has the most mitcochondria - type 1, slow-oxidative, slow what muscle fiber type is the least efficient - type IIb, fast-oxidative glycolytic, fast which muscle fiber type has mixed metabolism - type IIa, fast glycolytic, intermediate 3 Traits of Skeletal Muscle - Striated Multi Nuclei Voluntary 3 Traits of Cardiac Muscle - Striated Single Nuclei Involuntary 3 Traits of Smooth Muscle - Smooth Single Nuclei Involuntary What are the 2 main branches of th...

Myelination of the nerve fibers in the central nervous system is the job of the oligodendrocyte. T/F -:- True If bacteria invaded the CNS tissue, microglia would migrate to the area to engulf and destroy them. T/F -:- True Neurons in the CNS are organized into functional groups. T/F -:- True Efferent nerve fibers may be described as motor nerve fibers. T/F -:- True Voltage is always measured between two points and may be called the potential between these two points. T/F 2 0 ...