Muscles And Nerves Flashcards
Action of the gluteus maximus and which nerve it is innervated by:
- extension of the thigh at the hip joint
- lateral rotation of the thigh at the hip joint
- superior fibres also abduct the thigh at the hip joint
- inferior gluteal nerve
Action of the gluteus medius and which nerve it is innervated by:
- abduction of the thigh at the hip joint
- medial rotation of the thigh at the hip joint
- superior gluteal nerve
Action of the gluteus minimus and which nerve it is innervated by:
- abduction of the thigh at the hip
- medial rotation of the thigh at the hip
- superior gluteal nerve
Action of the tensor fasciae latae and which nerve it is innervated by:
- abduction of the thigh at the hip
- medial rotation of the thigh at the hip
- superior gluteal nerve
Action of the iliacus and which nerve it is innervated by:
- flexion of the thigh at the hip
- femoral nerve
Action of psoas major and which nerve it is innervated by:
- flexion of the thigh at the hip
- femoral nerve
If the lower limb is fixed, the iliacus and psoas major will produce:
- flexion of the trunk on the thigh
What is the function of the iliotibial tract and what tissue is it composed of?
- composed of dense fibrous connective tissue
- function:
Function of the adductor magnus and which nerve it is innervated by:
- adduction of the thigh at the hip
- sciatic nerve
Function of the adductor longus and which nerve it is innervated by:
- adduction of the thigh at the hip
- flexion of the thigh at the hip
- medial rotation of the thigh at the hip
- obturator nerve
Which three muscles make up the hamstrings? What are their two common actions and in what movements are they antagonists?
- biceps femoris, semimembranosus, semitendinosus
Synergists
- flexion of the leg at the knee
- extension of the thigh at the hip
-
Action of the biceps femoris and which nerve it is innervated by:
- flexion of the leg at the knee
- extension of the thigh at the hip
- lateral rotation of the thigh at the hip
- sciatic nerve
- short head innervated by common fibular (peroneal) nerve
Function of semimembranosus and which nerve it is innervated by:
- flexion of the leg at the knee
- extension of the thigh at the hip
- medial rotation of the thigh at the hip
- sciatic nerve
Function of semitendinosus and which nerve it is innervated by:
- flexion of the leg at the knee
- extension of the thigh at the hip
- medial rotation of the thigh at the hip
- sciatic nerve
Function of gracilis and which nerve it is innervated by:
- flexion of the leg at the knee
- medial rotation of the leg at the knee
- adduction of the thigh at the hip
- medial rotation of the thigh at the hip
- obturator nerve
Which four muscles make up the quadriceps? What is their collective action?
- vastus intermedius, vastus medialis, vastus lateralis, and rectus femoris
- extension of the leg at the knee
Action of rectus femoris and which nerve it is innervated by:
- extension of the leg at the knee
- flexion of the thigh at the hip
- femoral nerve
Action of sartorius and which nerve it is innervated by:
- flexion of the thigh at the hip
- abduction of the thigh at the hip
- lateral rotation of the thigh at the hip
- flexion of the leg at the knee
- femoral nerve
Action of popliteus and which nerve it is innervated by:
- when knee flexion is initiated, it contracts to produce slight medial rotation of the tibia that unlocks the joint
- tibial nerve
Action of gastrocnemius and which nerve it is innervated by:
- plantar flexion of the ankle joint
- flexion of the leg at the knee
- tibial nerve
Action of soleus and which nerve it is innervated by:
- plantar flexion of the foot at the ankle
- tibial nerve
Action of fibularis longus (or peroneus longus) and which nerve it is innervated by:
- eversion of the foot
- plantar flexion of the foot
- superficial fibular nerve
Action of fibularis (peroneus) brevis and which nerve it is innervated by:
- eversion of the foot
- plantar flexion of the foot
- superficial fibular nerve
Action of tibialis anterior and which nerve it is innervated by:
- dorsiflexion of the foot
- inversion of the foot
- deep fibular nerve
Action of tibialis posterior and which nerve it is innervated by:
- inversion of the foot
- plantar flexion of the foot
- tibial nerve
Which two muscles insert at the calcaneal tendon (Achilles tendon)?
Gastrocnemius and soleus
What are the four major nerve plexuses?
- cervical plexus
- brachial plexus
- lumbar plexus
- sacral plexus
What muscle does the phrenic nerve innervate and which plexus does it originate from?
- the diaphragm
- originates from the cervical plexus
Name 3 muscles innervated by the cervical plexus:
- rhomboids
- serratus anterior
- gleniohyoid
- thyrohyoid
- omohyoid
- sternohyoid
- sternothyroid
The musculocutaneous nerve innervates which muscle?
- biceps brachii
- brachialis
- coracobrachialis
The ulnar nerve innervates which muscle?
Flexor carpi ulnaris
The median nerve innervates which muscles?
- flexor carpi radialis
- palmaris longus
The median nerve is formed from branches of which two cords?
The lateral cord and the medial cord
The axillary nerve innervates which muscles?
- deltoids
- teres minor
The radial nerve innervates which muscles?
- triceps brachii
- brachioradialis
- extensor carpi radialis
- extensor carpi ulnaris
- supinator
- anconeus
