What moves closer together during muscle contraction? H bands; I bands; A bands; Z lines
What is A bands, would also accept H bands.
100
T/F: During a muscle contraction, the H-zone lengthen (gets wider).
What is False?
100
How many children does Dr K have in his family?
What is 4?
100
T/F: Smooth muscle makes up the major muscle in the heart?
What is False?
100
How many touchdowns did Dr K score in high school? zero; 14; 23; 60
What is 60?
200
A muscle that is responsible for producing the majority of a particular movement is the: antagonist; synergist; prime mover (agonist); none of the above
What is prime mover (agonist)?
200
What term is used to describe the cell membrane of a muscle cell? Sarcolemma; Sarcomere; Sarcoplasm; Sarcoplasmic reticulum
What is Sarcolemma?
200
Which of the following muscles connects to the calcaneal tendon and inserts at the calcaneus? Semitendonosis; Sartorius; Tibialis anterior; Gastrocnemius
What is gastrocnemius?
200
What do synaptic vesicles at the neuromuscular junction contain? Calcium; ATP; Acetylcholine; Sodium
What is Acetylcholine?
200
Which one of the following muscles is found on the LOWER leg? biceps femoris; soleus; sartorius; vastus intermedius
What is soleus?
300
Which of the following muscle is name for its shape? Pectoralis major; Biceps brachii; Deltoid; Tibialis anterior
What is Deltoid?
300
The quadriceps group includes all EXCEPT the: biceps femoris; rectus femoris; vastus lateralis; vastus medialis
What is biceps femoris?
300
The sarcoplasmic reticulum: stores calcium ions; shortens during muscle contraction; transmits nerve impulses to the myofibrils; connects adjacent sarcomeres
What is stores calcium ions?
300
Which of the following connective tissue layers is outside all the others? Perimysium; Endomysium; Epimysium; Fascicle
What is epimysium?
300
The fixed end of a muscle is called the _______ and the moveable end is called the _______. Tendon & aponeurosis; Aponeuroses & tendon; Insertion & origin; Origin& insertion
What is origin and insertion?
400
By default, the activ site for actin-myosin binding is covered by Actin; Myosin; Troponin; Tropomyosin
What is troponin?
400
Which of the following is a type of nonstriated, involuntary muscle? Cardiac; Smooth; White skeletal; Dark skeletal
What is smooth muscle?
400
What do thick filaments make up? Z line; A band; I band; H band
What is A band?
400
Which muscle extends the elbow during the action of push-ups? Deltoid; Pectoralis major; Triceps brachii; Biceps brachii
What is triceps brachii?
400
The length of the resting sarcomere is: longer than the length of a contracted sarcomere; shorter than the length of a contracted sarcomere; the same length as a contracted sarcomere; the same length as the muscle fiber
What is longer than the length of a contracted sarcomere;
500
List the following structures in order from smallest to largest: muscle fiber, myofibril, muscle fascicle
What is myofibril, muscle fiber and muscle fascicle?
500
How do skeletal muscle fibers differ from 'typical cells'? they lack a plasma membrane; they ave many nuclei; are very small; they lack mitochondria
What is they have many nuclei?
500
The protein molecule with a pivoting head is: Actin; Myosin; Troponin; Tropomyosin
What is Mysoin?
500
Which following type of connective tissue connects muscle to bone? tendon; ligament; cartilage; adipose
What is tendon?
500
During muscle contraction, the width of which of the following will remain constant: H band; I bank; A band; Zline