Portage A & P 1 Module 5 Exam
A motor signal is a signal that is sent from a muscle to the central nervous
system. - ansfalse, that is sensory input
A person sustained a back injury to the muscle group closest to the spine.
What muscle group was injured? - ansSpinalis
Acetylcholine is what type of substance? - ansneurotransmitter
cardiac and smooth muscle tissue are both under involuntary control -
anstrue
Contraction of (muscle) results in hip flexion - ansiliacus
Describe how acetylcholine, sodium ions and calcium ions work together to
enable a muscle contraction. - ansAcetylcholine is released from a motor
nerve at the neuromuscular junction. Once there, it binds with receptors on
the muscle fiber that cause sodium ions to be released inside the cell. This
causes an action potential which reaches the sarcoplasmic recticulum. The
sodium ions cause calcium ions to be released from to sarcoplasmic
recticulum. The calcium ions cause the muscle contraction. The myosin
heads grab the actin and pull them along causing a contraction.
During a muscle contraction which protein myofilament contains cross-
bridges? - ansmyosin
External oblique - ansfibers run down and
forward origin= sternum, ribs 5-12
insertion= linea alba, iliac crest
action= flexion of the spine, compress
abdomen flexes trunk to same side, rotates to
opposite side innervation: lower intercostal,
ilioinguinal nerves
flexor digitorum superficialis action and innervation - ansflexion of wrist and
digits 2-5, median nerve
Iliocostalis - ansiliocostalis lumborum, iliocostalis thoracis, iliocostalis
cervicis Action= spine extension
Internal oblique - ansfibers run upward and
forward origin= iliac crest, lumbodorsal fascia
insertion= inferior ribs, linea alba
action= compresses abdomen, depresses ribs, flexes spine, rotates spine to
same side innervation= lower intercostal, ilioinguinal nerves
Longissimus Cervicis - ansOrigin = transverse processes of superior thoracic
vertebrae insertion= transverse process of middle and superior cervical
vertebrae
, Portage A & P 1 Module 5 Exam
action= extend head, laterally flexes neck to same
side innervation = cervical and thoracic spinal
nerves
longissimus group - anslongissimus capitis
longissimus cervicis
longissimus thoracis
action= spinal
extension
longissimus thoracis - ansorigin= transverse processes all thoracic, lumbar
vertebrae insertion= transverse process of thoracic vertebrae
action= extend spine, laterally flexes spine to same
side innervation= thoracic and lumbar spinal nerves
peroneus brevis origin, insertion, innervation - anslateral, distal fibula, origin
= lateral side of 5th metatarsal, innervation = superficial peroneal nerve
pronator teres insertion, action, innervation - ansmidlateral surface of radius,
pronation, median nerve
Rectus abdominis - ansorigin= pubic crest , pubic
symphysis insertion= pubis, cartilages of rib 5-7,
xiphoid process action= flexion of spine,
compression of abdominal viscera innervation=
spinal nerves (T7 - T12)
Scalenes (anterior, middle, posterior) - ansorigin= transverse processes of
C2-C7 Insertion= 1st ad 2nd ribs
Action= elevate ribs 1-2
Innervation= cervical spine
nerves
semispinalis capitis - ansOrigin = articular processes of inferior cervical and
transverse processes of superior thoracic vertebrae (T1-T7)
Insertion= occipital bone
Action= extend head, laterally flexes neck to the
same side Innervation= spinal nerve
Spinalis - ansThree divisions: spinalis thoracis, spinalis cervicis, spinalis
capitis action= spine extension, stabilizes spinal column and holds up
posture
Splenious Capitis - ansorigin= spinous
process/ligaments insertion= mastoid process and
occipital bone
action= extend head and laterally flexes neck to
same side innervated= cervical spinal nerves
, Portage A & P 1 Module 5 Exam
tendons connect what type of tissue - ansmuscle to bone
, Portage A & P 1 Module 5 Exam
the cervical plexus contains nerves that innervate the thigh - ansfalse
the musculocutaneous nerve is part of the central nervous system - ansfalse,
the peripheral nerve
There are five types of muscle tissue found in the body. - ansFalse, there are
3
Thyrohoid - ansOrigin= thyroid cartilage of the
larynx insertion= hyoid bone
action= elevates thyroid, depresses hyoid
bone innervation= hypoglossal nerve
transverse abdominis - ansOrigin= inguinal ligament, inner iliac
crest Insertion= linea alba, pubis
action= compression of abdomen
innervation= first lumbar nerve, iliohypogastric, ilioinguinal
True or False the I bands contain thick filaments - ansFalse (I bands contain
thin filaments)
True or False: When a muscle contracts, the Z lines within a sarcomere come
closer together towards the M line. - anstrue
vastus medialis origin, action - ansintertrochanteric line of femur, knee
extension
What does the A band contain? - ansthick and thin filaments
What does the H zone contain? - ansthick filaments only
What does the sternocleidomastoid muscle do, origin, insertion, innervation -
ansAction
= neck flexion, turns face to opposite
side Origin = sternal end of clavicle and
manubrium Insertion = mastoid region of
skull
Innervation = accessory nerve
What facial muscles are innervated by CN VII (facial nerve) - ansOrbicularis
oris, orbicularis oculi, buccinator, zygomatic minor/major, frontalis, risorius
What facial muscles are innervated by the Trigeminal nerve, mandibular
branch - anstemporalis and masseter
What is the insertion for Teres major? - ansIntertubercular groove of humerus
A motor signal is a signal that is sent from a muscle to the central nervous
system. - ansfalse, that is sensory input
A person sustained a back injury to the muscle group closest to the spine.
What muscle group was injured? - ansSpinalis
Acetylcholine is what type of substance? - ansneurotransmitter
cardiac and smooth muscle tissue are both under involuntary control -
anstrue
Contraction of (muscle) results in hip flexion - ansiliacus
Describe how acetylcholine, sodium ions and calcium ions work together to
enable a muscle contraction. - ansAcetylcholine is released from a motor
nerve at the neuromuscular junction. Once there, it binds with receptors on
the muscle fiber that cause sodium ions to be released inside the cell. This
causes an action potential which reaches the sarcoplasmic recticulum. The
sodium ions cause calcium ions to be released from to sarcoplasmic
recticulum. The calcium ions cause the muscle contraction. The myosin
heads grab the actin and pull them along causing a contraction.
During a muscle contraction which protein myofilament contains cross-
bridges? - ansmyosin
External oblique - ansfibers run down and
forward origin= sternum, ribs 5-12
insertion= linea alba, iliac crest
action= flexion of the spine, compress
abdomen flexes trunk to same side, rotates to
opposite side innervation: lower intercostal,
ilioinguinal nerves
flexor digitorum superficialis action and innervation - ansflexion of wrist and
digits 2-5, median nerve
Iliocostalis - ansiliocostalis lumborum, iliocostalis thoracis, iliocostalis
cervicis Action= spine extension
Internal oblique - ansfibers run upward and
forward origin= iliac crest, lumbodorsal fascia
insertion= inferior ribs, linea alba
action= compresses abdomen, depresses ribs, flexes spine, rotates spine to
same side innervation= lower intercostal, ilioinguinal nerves
Longissimus Cervicis - ansOrigin = transverse processes of superior thoracic
vertebrae insertion= transverse process of middle and superior cervical
vertebrae
, Portage A & P 1 Module 5 Exam
action= extend head, laterally flexes neck to same
side innervation = cervical and thoracic spinal
nerves
longissimus group - anslongissimus capitis
longissimus cervicis
longissimus thoracis
action= spinal
extension
longissimus thoracis - ansorigin= transverse processes all thoracic, lumbar
vertebrae insertion= transverse process of thoracic vertebrae
action= extend spine, laterally flexes spine to same
side innervation= thoracic and lumbar spinal nerves
peroneus brevis origin, insertion, innervation - anslateral, distal fibula, origin
= lateral side of 5th metatarsal, innervation = superficial peroneal nerve
pronator teres insertion, action, innervation - ansmidlateral surface of radius,
pronation, median nerve
Rectus abdominis - ansorigin= pubic crest , pubic
symphysis insertion= pubis, cartilages of rib 5-7,
xiphoid process action= flexion of spine,
compression of abdominal viscera innervation=
spinal nerves (T7 - T12)
Scalenes (anterior, middle, posterior) - ansorigin= transverse processes of
C2-C7 Insertion= 1st ad 2nd ribs
Action= elevate ribs 1-2
Innervation= cervical spine
nerves
semispinalis capitis - ansOrigin = articular processes of inferior cervical and
transverse processes of superior thoracic vertebrae (T1-T7)
Insertion= occipital bone
Action= extend head, laterally flexes neck to the
same side Innervation= spinal nerve
Spinalis - ansThree divisions: spinalis thoracis, spinalis cervicis, spinalis
capitis action= spine extension, stabilizes spinal column and holds up
posture
Splenious Capitis - ansorigin= spinous
process/ligaments insertion= mastoid process and
occipital bone
action= extend head and laterally flexes neck to
same side innervated= cervical spinal nerves
, Portage A & P 1 Module 5 Exam
tendons connect what type of tissue - ansmuscle to bone
, Portage A & P 1 Module 5 Exam
the cervical plexus contains nerves that innervate the thigh - ansfalse
the musculocutaneous nerve is part of the central nervous system - ansfalse,
the peripheral nerve
There are five types of muscle tissue found in the body. - ansFalse, there are
3
Thyrohoid - ansOrigin= thyroid cartilage of the
larynx insertion= hyoid bone
action= elevates thyroid, depresses hyoid
bone innervation= hypoglossal nerve
transverse abdominis - ansOrigin= inguinal ligament, inner iliac
crest Insertion= linea alba, pubis
action= compression of abdomen
innervation= first lumbar nerve, iliohypogastric, ilioinguinal
True or False the I bands contain thick filaments - ansFalse (I bands contain
thin filaments)
True or False: When a muscle contracts, the Z lines within a sarcomere come
closer together towards the M line. - anstrue
vastus medialis origin, action - ansintertrochanteric line of femur, knee
extension
What does the A band contain? - ansthick and thin filaments
What does the H zone contain? - ansthick filaments only
What does the sternocleidomastoid muscle do, origin, insertion, innervation -
ansAction
= neck flexion, turns face to opposite
side Origin = sternal end of clavicle and
manubrium Insertion = mastoid region of
skull
Innervation = accessory nerve
What facial muscles are innervated by CN VII (facial nerve) - ansOrbicularis
oris, orbicularis oculi, buccinator, zygomatic minor/major, frontalis, risorius
What facial muscles are innervated by the Trigeminal nerve, mandibular
branch - anstemporalis and masseter
What is the insertion for Teres major? - ansIntertubercular groove of humerus
