Anatomy (BIOL 2220) Exam 3 – Cummings
UPDATED Exam Questions and
CORRECT Answers
skeletal muscle - CORRECT ANSWER - striated, voluntary, multinucleated
cardiac muscle - CORRECT ANSWER - striated, involuntary, uninucleated
smooth muscle - CORRECT ANSWER - nonstriated, involuntary, uninucleated
properties of muscle - CORRECT ANSWER - excitability, contractibility, extensibility,
elasticity
functions of muscle - CORRECT ANSWER - motion, maintenance of posture, stabilizing
joints, heat protection
skeletal muscle composition - CORRECT ANSWER - skeletal muscle fibers, blood
vessels, nerve fibers, connective tissue
direct attachment - CORRECT ANSWER - muscle has contact with bone
indirect attachment - CORRECT ANSWER - extension between muscle and bone holds
them together
epimysium - CORRECT ANSWER - dense irregular connective tissue covering muscle
tendon - CORRECT ANSWER - rope-like attachment from muscle to bone made of
connective tissue
,aponeurosis - CORRECT ANSWER - sheet-like attachment from muscle to bone made of
connective tissue
origin - CORRECT ANSWER - point of muscle contact with unmovable bone, almost
always superior/proximal to insertion
insertion - CORRECT ANSWER - point of muscle contact with moveable bone, almost
always inferior/distal to origin
fascicle - CORRECT ANSWER - chunk of muscle with connective tissue covering
perimysium - CORRECT ANSWER - connective tissue covering a fascicle
muscle fiber - CORRECT ANSWER - muscle cell
endomysium - CORRECT ANSWER - reticular connective tissue covering individual cells
myofibers - CORRECT ANSWER - muscle cells aka muscle fibers
sarcolema - CORRECT ANSWER - plasma membrane of muscle cell
sarcoplasm - CORRECT ANSWER - cytoplasm of muscle cell
nuclei of skeletal muscle - CORRECT ANSWER - multiple per cell, really long cells
sarcoplasmic reticulum - CORRECT ANSWER - modified endoplasmic reticulum,
primarily runs parallel to fibers but some run perpendicular (terminal cisternae)
, T tubule - CORRECT ANSWER - runs between two terminal cisternae
terminal cisternae - CORRECT ANSWER - sarcoplasmic reticulum tubes that run
perpendicular to fibers
myofibrils - CORRECT ANSWER - configuration gives striation, made up of sarcomeres
sarcomeres - CORRECT ANSWER - made up of myofilaments
myofilaments - CORRECT ANSWER - made up of actin or myosin (proteins)
sarcomere Z line - CORRECT ANSWER - aka Z disk, ends of sarcomere
sarcomere A band - CORRECT ANSWER - entire length of thick myofilament
sarcomere I band - CORRECT ANSWER - only the thin myofilament
sarcomere H zone - CORRECT ANSWER - only the thick myofilament
sarcomere M line - CORRECT ANSWER - middle of the H zone
thick myofilaments - CORRECT ANSWER - myosin, consist of tail and 2 heads, one head
is actin-binding site, one head is ATP-binding site
thin myofilaments - CORRECT ANSWER - actin, consist of myosin-binding site,
tropomyosin (long strands), and troponin I, T, and C
UPDATED Exam Questions and
CORRECT Answers
skeletal muscle - CORRECT ANSWER - striated, voluntary, multinucleated
cardiac muscle - CORRECT ANSWER - striated, involuntary, uninucleated
smooth muscle - CORRECT ANSWER - nonstriated, involuntary, uninucleated
properties of muscle - CORRECT ANSWER - excitability, contractibility, extensibility,
elasticity
functions of muscle - CORRECT ANSWER - motion, maintenance of posture, stabilizing
joints, heat protection
skeletal muscle composition - CORRECT ANSWER - skeletal muscle fibers, blood
vessels, nerve fibers, connective tissue
direct attachment - CORRECT ANSWER - muscle has contact with bone
indirect attachment - CORRECT ANSWER - extension between muscle and bone holds
them together
epimysium - CORRECT ANSWER - dense irregular connective tissue covering muscle
tendon - CORRECT ANSWER - rope-like attachment from muscle to bone made of
connective tissue
,aponeurosis - CORRECT ANSWER - sheet-like attachment from muscle to bone made of
connective tissue
origin - CORRECT ANSWER - point of muscle contact with unmovable bone, almost
always superior/proximal to insertion
insertion - CORRECT ANSWER - point of muscle contact with moveable bone, almost
always inferior/distal to origin
fascicle - CORRECT ANSWER - chunk of muscle with connective tissue covering
perimysium - CORRECT ANSWER - connective tissue covering a fascicle
muscle fiber - CORRECT ANSWER - muscle cell
endomysium - CORRECT ANSWER - reticular connective tissue covering individual cells
myofibers - CORRECT ANSWER - muscle cells aka muscle fibers
sarcolema - CORRECT ANSWER - plasma membrane of muscle cell
sarcoplasm - CORRECT ANSWER - cytoplasm of muscle cell
nuclei of skeletal muscle - CORRECT ANSWER - multiple per cell, really long cells
sarcoplasmic reticulum - CORRECT ANSWER - modified endoplasmic reticulum,
primarily runs parallel to fibers but some run perpendicular (terminal cisternae)
, T tubule - CORRECT ANSWER - runs between two terminal cisternae
terminal cisternae - CORRECT ANSWER - sarcoplasmic reticulum tubes that run
perpendicular to fibers
myofibrils - CORRECT ANSWER - configuration gives striation, made up of sarcomeres
sarcomeres - CORRECT ANSWER - made up of myofilaments
myofilaments - CORRECT ANSWER - made up of actin or myosin (proteins)
sarcomere Z line - CORRECT ANSWER - aka Z disk, ends of sarcomere
sarcomere A band - CORRECT ANSWER - entire length of thick myofilament
sarcomere I band - CORRECT ANSWER - only the thin myofilament
sarcomere H zone - CORRECT ANSWER - only the thick myofilament
sarcomere M line - CORRECT ANSWER - middle of the H zone
thick myofilaments - CORRECT ANSWER - myosin, consist of tail and 2 heads, one head
is actin-binding site, one head is ATP-binding site
thin myofilaments - CORRECT ANSWER - actin, consist of myosin-binding site,
tropomyosin (long strands), and troponin I, T, and C
