Sensory and Motor Mechanisms AP Biology Crosby High
Sensory and Motor Mechanisms AP Biology Crosby High School
Sensory Perception Sensory Reception – Exteroreceptors – Interoreceptors Sensory Transduction – Receptor Potential Amplification Transmission Integration – Sensory adaptation
Sensory Receptors Mechanoreceptors – Touch – Hair cells Pain receptors (nociceptors) Thermoreceptors Chemoreceptors – Gustatory – Olfactory Electromagnetic receptors
Vision Photoreceptors Planarians: eye cup Invertebrates – Compound eyes Ommatidia – Single-lens eye Vertebrates – Single-lens eye
Vertebrate Eye Sclera Choroid Conjunctiva Cornea Iris Pupil Retina Lens and Ciliary Body Rods and Cones
Hearing Outer ear – External Pinna and Auditory canal Middle ear – 3 ossicles Malleus Incus Stapes – Oval Window – Eustachian tubes Inner ear – Cochlea Upper Vestibular Canal Lower Tympanic Canal – Organ of Corti – Auditory nerve – Equilibrium Utricle Saccule Semicircular canals
Skeletal System Types – Hydrostatic – Exoskeleton – Endoskeleton Types of Joints – Ball-and-socket – Hinge – Pivot
Structure of Muscles Myofilaments – Actin: Thin filaments – Myosin: Thick filaments Sarcomere – Z lines – I band – A band – H zone
Muscle Contractions Tropomyosin Troponin complex Ca 2+ rearranges Tropomyosin. Troponin complex Sarcoplasmic Reticulum
Types of Muscle Fast Muscle Slow Muscle – Myoglobin Cariac Muscle – Located in the heart – Intercalated discs Smooth Muscle – Non-striated – Mainly in hollow organs for peristalsis
Sliding Filament Model
Skeletal System
Vision
Hearing
- Slides: 14