Animal Control Systems

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Presentation transcript:

Animal Control Systems

Endocrine System

Human Central Nervous System The body’s fastest method for controlling body systems

Brain Fig. 49-4 Fig. 49-2 Figure 49.2 Nervous system organization Eyespot Brain Brain Radial nerve Nerve cords Nerve ring Ventral nerve cord Transverse nerve Nerve net Segmental ganglia (a) Hydra (cnidarian) (b) Sea star (echinoderm) (c) Planarian (flatworm) (d) Leech (annelid) Brain Brain Ganglia Ventral nerve cord Anterior nerve ring Brain Spinal cord (dorsal nerve cord) Sensory ganglia Longitudinal nerve cords Figure 49.2 Nervous system organization Ganglia Segmental ganglia (e) Insect (arthropod) (f) Chiton (mollusc) (g) Squid (mollusc) (h) Salamander (vertebrate)

Central nervous system (CNS) Peripheral nervous system (PNS) Brain Fig. 49-4 Central nervous system (CNS) Peripheral nervous system (PNS) Brain Cranial nerves Spinal cord Ganglia outside CNS Spinal nerves

Cell body of Gray sensory neuron in matter dorsal root ganglion Fig. 49-3 Cell body of sensory neuron in dorsal root ganglion Gray matter Quadriceps muscle White matter Hamstring muscle Figure 49.3 The knee-jerk reflex Spinal cord (cross section) Sensory neuron Motor neuron Interneuron

Organization of the Nervous System Figure 7.1

CNS PNS Efferent neurons Afferent (sensory) neurons Motor system Fig. 49-7-2 CNS PNS Efferent neurons Afferent (sensory) neurons Motor system Autonomic nervous system Hearing Sympathetic division Parasympathetic division Enteric division Locomotion Figure 49.7 Functional hierarchy of the vertebrate peripheral nervous system Hormone action Gas exchange Circulation Digestion

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