Anatomy Questions
Explore questions in the Anatomy category that you can ask Spark.E!
Name the three types of muscle: ______ muscle, ______ muscle, and ______ muscle. 1. cardiac2. connective3. smooth4. nervous5. skeletal
What are the two major protein types found in myofibrils?A. isotropinB. myosinC. actinD. myostatin
Correctly list, from superficial to deep, the connective tissue layers associated with a skeletal muscleepimysiumendomysiumperimysium
Name the proteins involved in blocking the binding sites on actin molecules, resulting in the inability of myosin to bind to the thin filaments. A. calcium and topomyosinB. torpomyosin and troponinC. actin and calciumD. actin and myosin
A muscle fiber shortens and generates force during the __________ period of a muscle twitch
What is a muscle fiber?A. a whole muscleB. a bundle of muscle cellsC. a muscle groupD. a muscle cell
A muscle that opposes the action at a joint is classified as a(n)__________.
What is isometric contraction?A. the development of tension but muscle shortensB. the development of tension but no shorteningC. no tension develops and no shortening occursD. no tension develops and shortening does occur
True or False: Thick and thin filaments do not change length during a muscle contraction.
The reddish-brown pigment that combines loosely with oxygen within muscle cells is called__________.
True or false: ATP is needed for both muscle contraction and muscle relaxation
List the muscles that form the quadriceps femoris muscle group1. vastus medialis2. vastus lateralis3. vastus intermedius4. semimembranosus5. semitendinosus6. rectus femoris7. biceps femoris
Neurons that control skeletal muscle are called ___________ neuorons.
A cross- bridge is best describes as a __________. A. binding of actin to the H lineB. myosin head bound to actinC. linkage between two sarcomeres at the Z lineD. binding of troponin to tropomyosin
What is the definition of the lactic acid threshold? A. the point where metabolism shifts from aerobic respiration to anaerobic respirationB. the amount of lactic acid the blood can transport from a muscle cellC. the rate at which a muscle cell can convert glucose to ATPD. the amount of oxygen muscle cells required after physical exercises to restore glucose levels
When a muscle contracts, its attachment point, called its __________, is pulled towards its origin
During a muscle contraction, what happens when ATP binds to the myosin heads?A. myosin cross-bridge releases from actinB. myosin cross-bridge binds to actin
The product of glycolysis, pyruvic acid, is converted to __________ when oxygen is not available.A. lactic acidB. waterC. carbon dioxide
place each muscle into the appropriate category, indicating whether it plantar flexes or dorsiflexes the foot.1. tibialis anterior2. gastrocnemius3. extensor digitorum longus4. fibularis (peroneus) tertius5. flexor digitorum longus6. soleus
A fulcrum, a force, and an object moved against resistance make up a _____.A. cross-bridgeB. levelC. syncytiumD. prime mover