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Match characteristics associated with muscle fibers to the type of muscle fiber to which they correspond. Some choices may be used more than once. -prevalent in marathon runners A)white fibers B)fast red fibers C)slow red fibers

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Match the labeled structures in the figure below with the choices that follow. Match the labeled structures in the figure below with the choices that follow.   a.pectoral girdle b.radius c.pelvic girdle d.femur e.sternum -structure labeled  D a.pectoral girdle b.radius c.pelvic girdle d.femur e.sternum -structure labeled "D"

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​The ____ pathway produces the most energy.


A) ​lactate fermentation
B) ​anaerobic respiration
C) ​aerobic respiration
D) ​use of stored ATP
E) ​dephosphorylation of creatine phosphate

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​A(n) ____ skeleton is an internal fluid filled chamber against which muscles exert force.


A) ​exoskeleton
B) ​hydrostatic
C) ​hydrophobic
D) ​hydrophilic
E) ​endoskeleton

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Which invertebrate has an endoskeleton?


A) clam
B) lobster
C) sea star
D) earthworm
E) shrimp

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​When you bring your hand to your shoulder, your biceps muscle ____ and your triceps muscle ____.


A) ​contracts; relaxes
B) ​relaxes; contracts
C) ​contracts; contracts
D) ​relaxes; relaxes
E) ​lengthens; shortens

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The following statements describe characteristics associated with bones and bone marrow. For each one, select the structure to which each best corresponds. Some choices may be used more than once. -​stores calcium A)compact bone B)spongy bone C)both spongy bone and compact bone D)neither spongy bone nor compact bone E)yellow marrow F)red marrow

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​Muscles are connected to bones by ____.


A) ​ligaments
B) ​epithelium
C) ​tendons
D) ​joints
E) ​bones

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​Earthworms have a(n) ____.


A) ​exoskeleton
B) ​endoskeleton
C) ​hydrostatic skeleton
D) ​segmental skeleton
E) ​squishy skeleton

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​The two tendons of the upper portion of the biceps attach to the ____.


A) ​clavicle
B) ​scapula
C) ​humerus
D) ​radius
E) ​backbone

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The following statements describe characteristics associated with bones and bone marrow. For each one, select the structure to which each best corresponds. Some choices may be used more than once. -​consists of concentric layers of extracellular matrix A)compact bone B)spongy bone C)both spongy bone and compact bone D)neither spongy bone nor compact bone E)yellow marrow F)red marrow

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​When a muscle fiber is relaxed, myosin cannot bind to actin because ____.


A) ​ATP is not present
B) ​the myosin binding site on actin is blocked
C) ​the myosin head is in the wrong shape for binding
D) ​the actin is in the wrong orientation for myosin binding
E) ​the myosin head is 180 degrees from its attachment configuration

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​The thick filaments of a sarcomere are composed of ____, and the thin filaments are composed of ____.


A) ​actin; myosin
B) ​myosin; actin
C) ​myofibrils; actin
D) ​A lines; Z lines
E) ​myofibrils; myosin

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In muscle contraction, the breaking of the cross-bridge between actin and myosin is caused by ____.


A) hydrolysis of ATP into ADP and Pi
B) formation of ATP from ADP and Pi
C) release of Pi from the myosin head
D) binding of a new ATP to the myosin head
E) return of myosin to a high-energy state

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​Bones store ____, which is important for nerve cell function and muscle contraction.


A) ​calcium
B) ​phosphorous
C) ​potassium
D) ​sodium
E) ​magnesium

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Match characteristics associated with muscle fibers to the type of muscle fiber to which they correspond. Some choices may be used more than once. -rely mainly on lactate fermentation A)white fibers B)fast red fibers C)slow red fibers

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The following statements describe characteristics associated with bones and bone marrow. For each one, select the structure to which each best corresponds. Some choices may be used more than once. -​has sheath of dense connective tissue A)compact bone B)spongy bone C)both spongy bone and compact bone D)neither spongy bone nor compact bone E)yellow marrow F)red marrow

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​Human cases of complete myostatin deficiency ____.


A) ​are very common
B) ​are quite rare
C) ​have never been identified
D) ​are easy to study
E) ​result from nutritional deficiencies

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Matching The following statements describe the various types of animal skeletons. For each one, select the best choice to which each corresponds. Some choices may be used more than once. -​found in all vertebrates A)hydrostatic skeleton B)exoskeleton C)endoskeleton

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​The bones of synovial joints are held in place by ____.


A) ​tendons
B) ​loose connective tissue
C) ​ligaments
D) ​cartilage
E) ​other bones

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