receptors 2 Flashcards
بسم الله الرحمن الرحيم
“يسقي بماء واحد ونفضل بعضها علي بعض في الأكل”
Unencapsulated Exteroceptors
Free nerve endings
Peritricihal nerve ending
Merkles tactile disc
Encapsulated Exteroceptors
1-Messiner
2-Pacinin
3-Ruffini
4-Krause end bulb
Ruffini corpuscles is
SITE
Capsulated Exteroceptor
Dermis + Subcutanuous tissue
Palm and sole
Ruffini Corpuscle
Fucntion
Mechanoreceptor responds to tension in the surrounding fibers of collagenous Connective tissue
Microscopic of Ruffini describe
Elongated fusiform 1x0.1
C.T capsule + Core of Collagenous Fibers
receive afferent nerve fibers losing it mylein sheath and give branches like (Diffuse Arborizations) end with flattend terminals between fibers of collangenous C.T.
Genital corpuscle is ?
Krause’s end Bulb
Site of Krause end bulb
Conjunctiva
Tongue
Mouth
External gentilila — genital Corpuscle
Microscopic of Krause end bulb
Small simple
C.T Capsle+ One afferent nerve fibers losing it myelin giving network on non myelinated nerve endings
large
C.T capsule + Core gelatious with nuclei + One or More afferent nerves losing myelin and Gives network of non myelinated nerve terminals
epidermins
Free nerve ending
merkels tactile disc
peritrichial nerve ending baske lkie a
dermis
Messiner
dermal papillae
fine touch
deeeeep
PACINIAN
Deep pressure
palm sole
Ruffini
Genitals + conjunctiva tongue mouth
Krasue end bulb
proprioceptors
تاخذ بالها من انقباض العضلة
ودرجات الضغط المختلفة في العضلة والوتر
وحركة المفاصل
ووضعية الجسم وحركته
types of proprioceptors
1-Pacinian
2-Muscle spindle MI
3-Golgi Tendon Organ MI
4-Uncapsulated Diffuse free nerve endings in many places Ligaments ,Joint Capsule , periosteum
Pacinan - Muscles spindle -Golgi Tendon -Free Nerve Endings
Stretch receptors fucntions
They are muscle spindle and Gogli Tendon Organ
- Proprioceptive impulses from them what do they do?
Regulate Myotatic relfelxex + send to cerebellum to regulate Muscle tone and Synergy
site Of Muscles spindles
Skeletal Muscles
extermities
Muscles of Fine touch
Function of Muscles spindle in Active reflex
Contraction of Contractile part of intrafuasl Muscle fibers
Functions of Muscles spindle In Passive Stretch …
Pull on tendon as in tendon reflexes and Knee Jerk
Muscle spindle stimulation
شد العضلة جامد في المسل سبندل هتبعت للحبل الشوكي ويرجع يديك انقباض للعضلة عشان متزودش تمدد للعضلة والا هتتقطع
Microscopc Characteristics of Muscles spindles
2-5 x .2 mm Encapsulated Muscular Corpscle containg 2-12 intrafuasl fibers which are
small in diameter than Extrafusal fibere
Indistincit striations
Non contractile central part
Compare between intrafusal and extrafusal Fibers
Intrafusals are smaller in diameter
Inditinict striations
Non contractile Central part
ايه فايدة السترايشنز في المسل سبندل ؟
بتشد الانوية اللي في النص حيث ان الخطوط دي موجودة علي الاطراف
فتحس المسل سبندل ان العضىلة انقبضت
Mention types on intrafuasl muscles fibers
Nuclear Bag fibers
Nuclaer Chain fibers
Describe Nuclear bag fibers
1-4 In each muscles spindle
Longer Larger than Nuclear Chain
Expanded Non Contractile Part with
Many closely Packed Nuclei
Describe Nuclear Chain Fibers of Muscle spindle
10 in A spindle
Short Narrower
Uniform diameter no Expanded Bag
The nuclei arranged in a Row as chain
What are the annulospiral endings ?
The terminal branches of Large myleinated sensory fibers which winds around nuclei of Muscles spindle fiber representing primary afferents
What flower spay endings?
Also called 2rdy endings
the 2ndry afferents nerves receving the terminals of smaller sensory fiber which supply nuclear areas of Nuclear chain Fiber in muscles spindle
terminating on each side of Annulospiral endings
the contractile part on intrafusal fibers recives?
Small motor fibers axons of gamma neurons.
Stimulation of motor neurons cause both ends of intrafusal muscles fiber to contract activating sesnsory Part
Stimulation of motor neurons of muscles spindle fibers cause ?
both ends of intrafusal muscles fiber to contract activating sesnsory Part
Golgi tendon Organ is at ?
Junction of Muscle with tendon
Function of Golgi Tendon Organ mention
Detect change in Mucles tension and infrom CNS about it thanks !
Microscopic structure of Gogli Tendon Organ describe
Similar in Size of Muscle spindle
2-5 x0.2 mm
Lamellated Capsule continuous with its outermost with Perinural Sheath
The primary afferent nerves enter it at the Equatorial Region giving ascending and descending unmeylinated Branches To surroud type one collagen fibrils
No Efferent ( motor ) innervation non contractile
golgi tendon organ is contractile ?
NO
Gogli tendon organ oute most layer contiuous with ?
Perinueral Sheath
Play important role in Kinesthesia
الاحساس بالحركة
Muscles spindle
Golgi Tendon Organ
Internal and external Ligaments have which type of receptos?
Gogli Tendon Organ like Tendons in everything type 1 collagen
Capsule of joint contains ?
Free Nerve Endings
Pacinian
Synovial membrane has … receptor
Pacinian
Pacinan is repesented in 2 Areas of joint ?
Capsule + Synoval membrane
Effectors
The termination of Motor fibers at effectors
Somatic
Sensory
Somatic effectors ?
For skeletal muscles
Motor end plate
Viscseral effector
Motor fibers to Cardiac and Smooth muscles
Seceretory fibers to glands giving terminals to Plamas membrane of cells of Acinin and tubules to scerte
Compare between intrafusal and extrafusal muscle fiber imp !
Enumerate proprioceptor imp !
Intrafusal chartarized by ?
smaller than extrafussals
Intrafusal chartarized by ?
smaller than extrafussals
gogli tendon organ cc by?
has afferents at eqatorial
Krasue end buLBS
2 types small large
not proprio but mechano
has afferent not efferent
اسئلة الاختيار من متعدد مش للبصمجة الفكرة انه بتثبت المعلومة
لازم تقرا كل السؤال بعدين تقرا
كل الاجابات
وتنفي كل الاجبات الاخري كده انت ثبتت النفي في دماغك
ثبتت الاثبات
لازم ؟
تدي الاسئلة وقت
الحمدلله رب العالمين
