HSC 214 - Lecture exam 2 UPDATED ACTUAL Questions and
CORRECT Answers
What is the function of the adrenal cortex? secrete steroid hormones and mineral corticoids
What does excitability of a muscle refer to? responding to a stimulus
What are the three types of muscle tissue? skeletal, cardiac and smooth
Where is smooth muscle tissue located? along the digestive tract and reproductive tract
smooth muscle tissue
cardiac muscle tissue
skeletal muscle tissue
What surrounds the fasicles in a skeletal muscle? perimysium
What surrounds the whole skeletal muscle? epimysium
What is a bundle in a skeletel muscle called? fasicle
What is a bundle in a fasicle called? muscle fiber
What surrounds the muscle fibers in a fasicle? endomysium
What are the bundles in a muscle fiber called? myofibrils
What types of muscles are involuntary? cardiac and smooth
What types of muscles are striated? cardiac and skeletal
Where are parallel arranged muscle fibers? abdomen and biceps
Where are convergent arranged muscle fibers? pectoral
, Where are bipennate arranged muscle fibers? rectus femoris
Where are unipennate arranged muscle fibers? extensor digitorum
What do convergent muscles fibers look like? start at a large base and come to a tendon
what do unipennate muscle fibers look like all muscle fibers come from one side of a central tendon
What do bipennate muscle fibers look like? central tendon with muscle fibers coming off from both directions
Where are multipennate arranged muscle fibers? deltoid
Where are circular arranged muscle fibers? orbicularis oculi and oris
What is the cell membrane of the skeletal muscle? sarcolemma
What is the cytoplasm of the skeletal muscle? sarcoplasm
What stores the calcium in the skeletal muscle? sarcoplasmic reticulum
What are the blue web like structures on the skeletal sarcoplasmic reticulum
muscle?
What are the green like structures on the skeletal transverse tubules
muscle?
What do transverse tubules do? take action potential and convert it to something that the muscle cell can use to
initiate the contraction process
what are the bundles within the myofibrils? myofilaments
What two proteins are in the myofilaments? actin and myosin
What make up a sacromere? actin and myosin
What are the thick myofilaments in a sacromere? myosin
What are the thin myofilaments in a sacromere? actin
What band only contains thin filament? I band
What band extends from the length of the myosin to the A band
other end?
What contains only the myosin? H zone
What initiates a physical change in the actin protein? calcium binding to troponin
CORRECT Answers
What is the function of the adrenal cortex? secrete steroid hormones and mineral corticoids
What does excitability of a muscle refer to? responding to a stimulus
What are the three types of muscle tissue? skeletal, cardiac and smooth
Where is smooth muscle tissue located? along the digestive tract and reproductive tract
smooth muscle tissue
cardiac muscle tissue
skeletal muscle tissue
What surrounds the fasicles in a skeletal muscle? perimysium
What surrounds the whole skeletal muscle? epimysium
What is a bundle in a skeletel muscle called? fasicle
What is a bundle in a fasicle called? muscle fiber
What surrounds the muscle fibers in a fasicle? endomysium
What are the bundles in a muscle fiber called? myofibrils
What types of muscles are involuntary? cardiac and smooth
What types of muscles are striated? cardiac and skeletal
Where are parallel arranged muscle fibers? abdomen and biceps
Where are convergent arranged muscle fibers? pectoral
, Where are bipennate arranged muscle fibers? rectus femoris
Where are unipennate arranged muscle fibers? extensor digitorum
What do convergent muscles fibers look like? start at a large base and come to a tendon
what do unipennate muscle fibers look like all muscle fibers come from one side of a central tendon
What do bipennate muscle fibers look like? central tendon with muscle fibers coming off from both directions
Where are multipennate arranged muscle fibers? deltoid
Where are circular arranged muscle fibers? orbicularis oculi and oris
What is the cell membrane of the skeletal muscle? sarcolemma
What is the cytoplasm of the skeletal muscle? sarcoplasm
What stores the calcium in the skeletal muscle? sarcoplasmic reticulum
What are the blue web like structures on the skeletal sarcoplasmic reticulum
muscle?
What are the green like structures on the skeletal transverse tubules
muscle?
What do transverse tubules do? take action potential and convert it to something that the muscle cell can use to
initiate the contraction process
what are the bundles within the myofibrils? myofilaments
What two proteins are in the myofilaments? actin and myosin
What make up a sacromere? actin and myosin
What are the thick myofilaments in a sacromere? myosin
What are the thin myofilaments in a sacromere? actin
What band only contains thin filament? I band
What band extends from the length of the myosin to the A band
other end?
What contains only the myosin? H zone
What initiates a physical change in the actin protein? calcium binding to troponin
