General Muscle
Name the three types of muscle
cardiac, smooth, skeletal
If the biceps is the agonist, what would be the antagonist?
triceps
What are the the three things that make up a lever?
1.Fulcrum or rotation of axis
2.Resistive force
3. Motive force
What nerve innervates glut. medius and minimus and tfl?
Name the three muscles that insert into the Pes Anserinus?
Gracilis, Sartorius, Semitendinosus
What are the two filaments of a sacromere?
actin and myosin
Name the three types of contraction
Isokinetic, Isometric, Isotonic
What is a first class lever?
First Class Levers: the fulcrum or axis of rotation is between the motive and resistive torques
Name 2 of the muscles involved in hip flexion?
iliacus, psoas-major, rectus femoris(with external rotation), psoas-minor
Name 2 muscles that originate on the ischial tuberosity?
adductor magnus, semimembranosus, semitendinosus, biceps femoris long head
Name the 5 characteristics of muscles
Contractibility, Extensibility, Elasticity, Excitability, Conductibility
As lengthening velocity increases, does eccentric force increase or decrease?
increase
What is a second class lever?
Second Class Levers: the resistive torque is between the fulcrum and the motive torque
Which nerve innervates anterior compartment of the lower leg muscles?
(Ant. tibilialis, Peroneus tertius)
Deep Fibular Nerve
Name the origin and insertion of the pectineus?
O: pectineal line of pubis
I: pectineal line of femure
Name the orginzation of skeletal muscle tissue from superficial to deep
epimysium, perimysium, endomysium
Summarize the five steps of muscle contraction?
Nerve impulse causes Ach release at neuromuscular junction which binds receptors on motor end plate initiating muscle impulse
Impulse spreads quickly along sarcolemma and into fiber along T-tubules, causing calcium to be released
Calcium binds to troponin, tropomoyosin moves, myosin heads attach to actin and form crossbridges
Myosin attach, pivot, detach cycle and sarcomere shortens, continues as long as calcium ions remain bound
Calcium is moved back into sarcoplasmic reticulum by ion pumps, filaments slide back into place
Bicep curls are an example of which lever?
Third Class Lever
Name 4 of the external hip rotators?
piriformis, obturator internus, obturator externus, gemellus superior, gemellus inferior, quadratus femoris
Which lower leg muscle crosses two joints?
Name 5 muscle fiber patterns?
fusiform, parallel, convergent, unipennate, bipennate, multipennate, circular
As the hamstring is in knee flexion and hip extension, what type of insufficiency occurs?
Active
Knee extension is which kind of lever?
3rd class lever
Which two nerves innervate the adductor magnus?
Obturator, Tibial
Name the muscles of each layer of the foot, with first layer being superficial and the fourth being most deep?
First: abductor hallucis, flexor digitorum brevis, abductor digiti minimi
Second: quadratus plantae, lumbricals
Third: flexor hallucis brevis, adductor hallucis, flexor digiti minimi
Fourth: dorsal interossei, plantar interossei