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exam 4
Chapters 9 and 10
| Question | Answer |
|---|---|
| what is not a function of muscles? | excreting wastes |
| in skeletal muscle contraction calcium apparently acts to | promote the brakdown ofglycogen and atp synthesis |
| The attachment of the muscle to the moving bone is known as | insertion |
| What would be a usual result of resistance exercise? | increase the number of myofibrils within the muscle cells |
| The sites where the motor nerve impulse is transmitted from the nerve endings to the skeletal muscle cell membrane are the | neuromuscular junctions |
| Myosin | all of the above(protein found in thick myofilaments, tail and two gobular heads,and contains the actinbinding sites |
| atransient change in membrane potential where the interior of the cellbecomes slightly less negative is known as | depolarization |
| the striations of a skeletal muscle cell are produced for the most part by | the arrangement of myofilaments |
| what surrounds the individual muscle cell? | endomysium |
| the neurotransmitter released by motor nerve fibers for the muscle stimulation is | acetylcholine |
| the term tendon refers to | a rope-like attachment of a muscle to a skeletal element |
| one functional unit of a skeletal muscle is | a sarcomere |
| In a isometric contraction, the muscle | does not change in length but increases tension |
| the cytoplasm of a muscle cell is called the | sarcoplasm |
| myoglobin has a special function in muscle tissue. It | stores oxygen |
| Muscle tissue doesnt have the property of | secretability |
| An anaerobic metabolic pathway that results in the production of two net atp'sper glucose plus two pyruvic acid molecules | glycolysis |
| The sliding filament model of contraction involves | actin andmyosin sliding past each other and partially overlapping |
| Generation of an action potential doesnt include | the arrival of a graded potential at the neuromuscular juntion |
| a graphic recording of the contractile activity of a muscle cell is a | myogram |
| Muscle contractions can be graded in two ways. wave summation and tetanus would bean example of a graded muscle response by | increasing the frequency of stimulation |
| the staircase effect called treppebest explains | why itis important for athletes to warm up |
| Scissors demonstrate which type of lever? | a first class lever |
| with regard to muscle fiber arrangement in a pennate muscle | the fasicles are short and attach obliquelyto acentral tendon |
| a muscle that provides all the major forcefor producing a specific movement is called | an agonist |
| When the term tricep biceps and quadriceps formspart of a muscle's name you can assume that | the muscle has 2 3 or 4 orgins respectively |
| The muscles that are found the openings of the body are collectively called | circular muscles |
| What muscle inserts by the calcaneal tendon? | Gastrocnemius |
| A lever said to operate at a mechanical advantage is also called a | power lever |
| What muscle does not compress the abdomen? | coccygeus |
| What muscle is not a member of the hamstrings | gracilis |
| A nursing infant develoops a powerfulsuckingmuscle that adukts also use for whistlingcalled the | buccinator |
| In flexing the arm at the elbow, the | triceps brachii acts as the antagonist |
| The Orbicularis oris, | closes purses and protrudes the lip |
| adductor magnus adductor longus and adductor brevis are parts of a large musclemass of the | medial compartment of the thigh |
| The muscle that abducts the arm is the | deltoid |
| A prime mover of hip flexion is the | rectus femoris |
| Muscles that cause plantar flexion include | the gastrocnemius and the soleus |
| the muscle that assists in smilling is the | zygomaticus |
| when considering the levers of your body's muscular system the joints would be considered the | fulcrum |
| Extrinsic muscles of the tongue act to | change position of the tongue |
| An example of a muscle named for its attachments would be the | sternocleidomastoid |
| The levator ani and the coccygeus muscles | form the pelvic diaphram |
| the prime mover of jaw closure,which elevates the jaw is the | masseter muscle |
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buzzard
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