MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH
LATEST QUESTIONS AND ANSWERS.
What Are The Main Types Of Proprioceptors?
1. Lamellated (pacinian) corpuscles = pressure receptors in joints
2. muscle spindles = stretch receptors in skeletal muscles. initiate stretch reflexes in which stretch
causes muscle contraction
3. golgi tendon organs = stretch receptors in tendons. stimulate reflexes that oppose stretch reflex
Gustation
sense of taste about 10,000 taste buds each with 50-150 taste cells
5 primary taste sensations
1 sweet = stimulated by carbs
2. sour = stimulated by acids ( H+)
3. salty = stimulated by salts (N a+ o+ r)
4. bitter = stimulated by organic compounds Mg and Ca salts
5. Umami = stimulated by some amino acids MSG
Auricle ( Pinna) OUTER EAR
- funnel-shaped
- collects sounds waves
External Acoustic Meatus OUT EAR
- S shaped tube
- lined with ceruminous glands
- carries sound to tympanic membrane
- terminates at tympanic membrane
Tympanic Membrane (Eardrum) OUT EAR
vibrates in response to sound waves
Tympanic Cavity MIDDLE EAR
Air filled space in temporal bone
Auditory Ossicles MIDDLE EAR
- 3 tiny bones
- vibrate in response to tympanic membrane vibrations amplify force
- malleus, incus and stapes
- hammer, anvil and stirrup
LATEST QUESTIONS AND ANSWERS.
What Are The Main Types Of Proprioceptors?
1. Lamellated (pacinian) corpuscles = pressure receptors in joints
2. muscle spindles = stretch receptors in skeletal muscles. initiate stretch reflexes in which stretch
causes muscle contraction
3. golgi tendon organs = stretch receptors in tendons. stimulate reflexes that oppose stretch reflex
Gustation
sense of taste about 10,000 taste buds each with 50-150 taste cells
5 primary taste sensations
1 sweet = stimulated by carbs
2. sour = stimulated by acids ( H+)
3. salty = stimulated by salts (N a+ o+ r)
4. bitter = stimulated by organic compounds Mg and Ca salts
5. Umami = stimulated by some amino acids MSG
Auricle ( Pinna) OUTER EAR
- funnel-shaped
- collects sounds waves
External Acoustic Meatus OUT EAR
- S shaped tube
- lined with ceruminous glands
- carries sound to tympanic membrane
- terminates at tympanic membrane
Tympanic Membrane (Eardrum) OUT EAR
vibrates in response to sound waves
Tympanic Cavity MIDDLE EAR
Air filled space in temporal bone
Auditory Ossicles MIDDLE EAR
- 3 tiny bones
- vibrate in response to tympanic membrane vibrations amplify force
- malleus, incus and stapes
- hammer, anvil and stirrup
