Quiz
Physiology V: Motor Units, Muscle Spindles, Golgi Tendon Organs and Joint Receptors
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Perguntas do quiz (15)
1When do motor neurons switch from being upper motor neurons to lower motor neurons?
- AAs they pass the C1 vertebrae
- BAt the Dorsal Horn of the spinal cord
- CAt the Ventral Horn of the spinal cord
2Which type of motor neurons innervate the bulk of fibres within a muscle responsible for contractile force?
- AAlpha Motor Neurons
- BDelta Motor Neurons
- CGamma Motor Neurons
3Which type of motor neuron innervates a sensory organ within the muscle responsible for reacting to muscle stretch?
- AAlpha Motor Neuron
- BDelta Motor Neuron
- CGamma Motor Neuron
4The sensory organ within a muscle that detects changes to muscle length and responds to stretch is called the muscle [blank_start]spindle[blank_end]
- Aspindle
5Muscles that work together to perform a function are called ...
E.g. Biceps brachii and brachialis working together to perform flexion of the forearm- ASynergistic Muscles
- BSynchronous Muscles
- CSynovial Muscles
6An α-motor neuron and all of the skeletal muscle fibres that it innervates are collectively known as a [blank_start]motor unit[blank_end]
- Amotor unit
7The collection of α-motor neurons that innervate a muscle is called a motor neuron [blank_start]pool[blank_end]
- Apool
8A single action potential in an α-motor neuron causes a muscle fibre to '[blank_start]twitch[blank_end]'
- Atwitch
9Sustained contraction of a muscle due to action potentials being fired at a very high rate is known as [blank_start]tetanus[blank_end]
- Atetanus
10Match the skeletal muscle fibre type to its description:
[blank_start]Type I Skeletal Muscle Fibre[blank_end]: ATP derived from oxidative phosphorylation. Slow contraction and relaxation. Fatigue Resistant.
[blank_start]Type IIa Skeletal Muscle Fibre[blank_end]: ATP derived from oxidative phosphorylation. Fast contraction and relaxation. Fatigue Resistant.
[blank_start]Type IIb Skeletal Muscle Fibre[blank_end]: ATP derived from glycolysis. Rapid contraction but not fatigue resistant.- AType I Skeletal Muscle Fibre
- BType IIa Skeletal Muscle Fibre
- CType IIb Skeletal Muscle Fibre
11Of the different types of skeletal muscle fibres, which is pale/white in colour
- AType I
- BType IIa
- CType IIb
12When a skeletal muscle is pulled, the muscle spindles inside that muscle react causing the muscle to resist stretch by pulling back. This is called the [blank_start]myotatic[blank_end] reflex.
- Amyotatic
13[blank_start]Intrafusal[blank_end] skeletal muscle fibres are found in the muscle spindle and are innervated by [blank_start]gamma[blank_end] motor neurons
- AIntrafusal
- BExtrafusal
- CParafusal
- Dgamma
- Ealpha
- Fdelta
14At the junction of muscle and tendon, in series with extrafusal fibres, lie small 'organs' which monitor changes in muscle tension. These small 'organs' are called [blank_start]Golgi Tendon[blank_end] Organs
- AGolgi Tendon
15What is the function of Golgi Tendon Organs?
- ATo assist and amplify the myotatic reflex
- BTo bring about muscle relaxation in response to extreme muscle tension
- CTo send 'help' signals to synergistic muscles in times of extreme muscle tension
Informações
- Descrição
- Physiology 5 – Motor units, muscle spindles, Golgi tendon organs and joint receptors given on 5/9/2018
- Autor
- Matthew Coulson
- Idioma
- English
- Visualizações
- 149
- Etiquetas
- Avaliação
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