ASU BIO 201: EXAM 3 , Updated Exam 2026 WITH Recent
Newest Verified And Well Analyzed Exam Questions (Actual
Exam 2026-2027) Correct Detailed & Verified ANSWERS
(100% Accurate Solutions) ALREADY GRADED A+||NEWEST
VERSION Of The Exam Guarantee Pass!!
characteristics of muscle - ANSWERS-Responsiveness (excitability): to chemical
signals, stretch and electrical changes across plasma membrane
Conductivity: local electrical change triggers a wave of excitation that travels along the
muscle fiber
Contractility: shortens when stimulated
Extensibility: capable of being stretched between contractions
Elasticity: returns to its original resting length after being stretched
properties of skeletal muscle - ANSWERS-voluntary, straitaed muscle attached to one
or more bones
myofiber - ANSWERS-muscle cell/muscle fiber, composed of myofibrils
myofibrils - ANSWERS-long protein bundles that occupy the main portion of the interior
of a muscle fiber, composed of myofilaments
myofilament - ANSWERS-protein microfilament responsible for muscle cell contraction,
composed of myosin or actin proteins
functions of each part of a muscle fiber - ANSWERS-Sarcolemma: plasma membrane
of a muscle fiber
Sarcoplasm: cytoplasm of a muscle fiber
Mitochondria: packed in spaces between myofibrils
Sarcoplasmic reticulum (SR): smooth ER that forms a network around each myofibril-
calcium reservoir
,Terminal cisternae: dilated end-sacs of SR which cross muscle fiber from one side to
the other
T tubules: tubular infoldings of the sarcolemma which penetrate through the cell and
emerge on the other side
Triad: a T tubule and 2 terminal cisterns
Internal proteins: long protein bundles that occupy the main portion of the sarcoplasm
Multiple nuclei: flattened nuclei pressed against the inside of the sarcolemma
3 kinds of muscle tissue - ANSWERS-skeletal, cardiac, smooth
major purpose of muscle - ANSWERS-converting chemical energy in ATP -->
mechanical energy of motion
muscle functions - ANSWERS--movement of: whole body, body parts, organ contents
-stability: maintain posture and prevent mvmt.
-communication: speech, facial expressions and writing
-control of openings and passageways: sphincters
-body heat production
characterizations of connective tissues of a muscle - ANSWERS-fascia, epimysium,
perimysium, endomysium
CT elements and how they merge with other tissues - ANSWERS-Tendons =
attachments between muscle and bone, dense-regular CT made of collagen fibers,
epimysium surrounding entire muscle is continuous with collagen fibers of tendons
role of collagen in connective tissues - ANSWERS-stretches slightly under tension and
recoils when released
-resists excessive stretching and protects muscle from injury
-returns muscle to resting length
-contribute to power output and muscle efficiency
, skeletal muscle shapes (with examples) - ANSWERS-Fusiform: biceps bracchi,
gastrocnemius
Triangular (convergent): pec major, temporalis
Parallel: rectus abdominus, zygomaticus major
Circular: orbicularis oculi, urethral and anal sphincters
Pennate: rectus femoris, deltoid
ways in which muscle attach to bone - ANSWERS-Indirect: tendons attach muscle to
bone
Direct: fleshy attachment to bone
Some skeletal muscles do not insert on bone, but in dermis of the skin
how tendons attach muscle to bone - ANSWERS-collagen fibers fibers of endo-, peri-,
and epimysium continue into the tendon, the tendon merges into the periosteum of bone
-aponeurosis: tendon is a broad, flat sheet
origin and insertion definition - ANSWERS-Origin: bony attachment at stationary end of
muscle
Insertion: bony attachment to mobile end of muscle
functional groups of muscles with example - ANSWERS-for elbow flexion
Prime mover (agonist): brachialis
Synergist: biceps brachii
Antagonist: triceps brachii
Fixator: rhomboideus
intrinsic vs extrinsic muscles - ANSWERS-Intrinsic: contained within a region (both
origin and insertion there)
Extrinsic: act on a designated regions, but has origins elsewhere
Newest Verified And Well Analyzed Exam Questions (Actual
Exam 2026-2027) Correct Detailed & Verified ANSWERS
(100% Accurate Solutions) ALREADY GRADED A+||NEWEST
VERSION Of The Exam Guarantee Pass!!
characteristics of muscle - ANSWERS-Responsiveness (excitability): to chemical
signals, stretch and electrical changes across plasma membrane
Conductivity: local electrical change triggers a wave of excitation that travels along the
muscle fiber
Contractility: shortens when stimulated
Extensibility: capable of being stretched between contractions
Elasticity: returns to its original resting length after being stretched
properties of skeletal muscle - ANSWERS-voluntary, straitaed muscle attached to one
or more bones
myofiber - ANSWERS-muscle cell/muscle fiber, composed of myofibrils
myofibrils - ANSWERS-long protein bundles that occupy the main portion of the interior
of a muscle fiber, composed of myofilaments
myofilament - ANSWERS-protein microfilament responsible for muscle cell contraction,
composed of myosin or actin proteins
functions of each part of a muscle fiber - ANSWERS-Sarcolemma: plasma membrane
of a muscle fiber
Sarcoplasm: cytoplasm of a muscle fiber
Mitochondria: packed in spaces between myofibrils
Sarcoplasmic reticulum (SR): smooth ER that forms a network around each myofibril-
calcium reservoir
,Terminal cisternae: dilated end-sacs of SR which cross muscle fiber from one side to
the other
T tubules: tubular infoldings of the sarcolemma which penetrate through the cell and
emerge on the other side
Triad: a T tubule and 2 terminal cisterns
Internal proteins: long protein bundles that occupy the main portion of the sarcoplasm
Multiple nuclei: flattened nuclei pressed against the inside of the sarcolemma
3 kinds of muscle tissue - ANSWERS-skeletal, cardiac, smooth
major purpose of muscle - ANSWERS-converting chemical energy in ATP -->
mechanical energy of motion
muscle functions - ANSWERS--movement of: whole body, body parts, organ contents
-stability: maintain posture and prevent mvmt.
-communication: speech, facial expressions and writing
-control of openings and passageways: sphincters
-body heat production
characterizations of connective tissues of a muscle - ANSWERS-fascia, epimysium,
perimysium, endomysium
CT elements and how they merge with other tissues - ANSWERS-Tendons =
attachments between muscle and bone, dense-regular CT made of collagen fibers,
epimysium surrounding entire muscle is continuous with collagen fibers of tendons
role of collagen in connective tissues - ANSWERS-stretches slightly under tension and
recoils when released
-resists excessive stretching and protects muscle from injury
-returns muscle to resting length
-contribute to power output and muscle efficiency
, skeletal muscle shapes (with examples) - ANSWERS-Fusiform: biceps bracchi,
gastrocnemius
Triangular (convergent): pec major, temporalis
Parallel: rectus abdominus, zygomaticus major
Circular: orbicularis oculi, urethral and anal sphincters
Pennate: rectus femoris, deltoid
ways in which muscle attach to bone - ANSWERS-Indirect: tendons attach muscle to
bone
Direct: fleshy attachment to bone
Some skeletal muscles do not insert on bone, but in dermis of the skin
how tendons attach muscle to bone - ANSWERS-collagen fibers fibers of endo-, peri-,
and epimysium continue into the tendon, the tendon merges into the periosteum of bone
-aponeurosis: tendon is a broad, flat sheet
origin and insertion definition - ANSWERS-Origin: bony attachment at stationary end of
muscle
Insertion: bony attachment to mobile end of muscle
functional groups of muscles with example - ANSWERS-for elbow flexion
Prime mover (agonist): brachialis
Synergist: biceps brachii
Antagonist: triceps brachii
Fixator: rhomboideus
intrinsic vs extrinsic muscles - ANSWERS-Intrinsic: contained within a region (both
origin and insertion there)
Extrinsic: act on a designated regions, but has origins elsewhere
