ASU BIO 201: EXAM 3 2024/2025 Exam
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3 kinds of muscle tissue - 🧠ANSWER ✔✔skeletal, cardiac, smooth
major purpose of muscle - 🧠ANSWER ✔✔converting chemical energy in
ATP --> mechanical energy of motion
muscle functions - 🧠ANSWER ✔✔-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 - 🧠ANSWER ✔✔fascia,
epimysium, perimysium, endomysium
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,CT elements and how they merge with other tissues - 🧠ANSWER
✔✔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 - 🧠ANSWER ✔✔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) - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Indirect: tendons
attach muscle to bone
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,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 - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Origin: bony attachment at
stationary end of muscle
Insertion: bony attachment to mobile end of muscle
functional groups of muscles with example - 🧠ANSWER ✔✔for elbow
flexion
Prime mover (agonist): brachialis
Synergist: biceps brachii
Antagonist: triceps brachii
Fixator: rhomboideus
intrinsic vs extrinsic muscles - 🧠ANSWER ✔✔Intrinsic: contained within a
region (both origin and insertion there)
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STATEMENT. ALL RIGHTS RESERVED
, Extrinsic: act on a designated regions, but has origins elsewhere
characteristics of muscle - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔voluntary, straitaed muscle
attached to one or more bones
myofiber - 🧠ANSWER ✔✔muscle cell/muscle fiber, composed of myofibrils
myofibrils - 🧠ANSWER ✔✔long protein bundles that occupy the main
portion of the interior of a muscle fiber, composed of myofilaments
myofilament - 🧠ANSWER ✔✔protein microfilament responsible for muscle
cell contraction, composed of myosin or actin proteins
functions of each part of a muscle fiber - 🧠ANSWER ✔✔Sarcolemma:
plasma membrane of a muscle fiber
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 4
STATEMENT. ALL RIGHTS RESERVED
Questions with Detailed Verified
Answers (100% Correct Answers) |
Already Graded A+
3 kinds of muscle tissue - 🧠ANSWER ✔✔skeletal, cardiac, smooth
major purpose of muscle - 🧠ANSWER ✔✔converting chemical energy in
ATP --> mechanical energy of motion
muscle functions - 🧠ANSWER ✔✔-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 - 🧠ANSWER ✔✔fascia,
epimysium, perimysium, endomysium
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,CT elements and how they merge with other tissues - 🧠ANSWER
✔✔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 - 🧠ANSWER ✔✔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) - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Indirect: tendons
attach muscle to bone
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
,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 - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Origin: bony attachment at
stationary end of muscle
Insertion: bony attachment to mobile end of muscle
functional groups of muscles with example - 🧠ANSWER ✔✔for elbow
flexion
Prime mover (agonist): brachialis
Synergist: biceps brachii
Antagonist: triceps brachii
Fixator: rhomboideus
intrinsic vs extrinsic muscles - 🧠ANSWER ✔✔Intrinsic: contained within a
region (both origin and insertion there)
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
, Extrinsic: act on a designated regions, but has origins elsewhere
characteristics of muscle - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔voluntary, straitaed muscle
attached to one or more bones
myofiber - 🧠ANSWER ✔✔muscle cell/muscle fiber, composed of myofibrils
myofibrils - 🧠ANSWER ✔✔long protein bundles that occupy the main
portion of the interior of a muscle fiber, composed of myofilaments
myofilament - 🧠ANSWER ✔✔protein microfilament responsible for muscle
cell contraction, composed of myosin or actin proteins
functions of each part of a muscle fiber - 🧠ANSWER ✔✔Sarcolemma:
plasma membrane of a muscle fiber
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 4
STATEMENT. ALL RIGHTS RESERVED
