10.1-10.3 Flashcards
Four Muscles involved in chewing
- Temporalis
- masseter
- lateral pterygoid muscle
- medial pterygoid muscle
True or False: Skeletal muscle contraction helps produce body heat
True
What are the functions of the endomysium? (multi)
A. Separates individual muscle fibers
B. Contains stretch receptors called muscle spindles
C. Creates room for capillaries and nerve fibers to reach every muscle fiber
D. Provide the extracellular chemical environment for each muscle fiber
A. Separates individual muscle fibers
C. Creates room for capillaries and nerve fibers to reach every muscle fiber
D. Provide the extracellular chemical environment for each muscle fiber
Which describes the endomysium?
A. A connective tissue sheath bundling many muscle fibers into a fascicle
B. A connective tissue sheath surrounding an entire muscle
C. The plasma membrane of an individual muscle cell
D. A loose connective tissue layer around each individual muscle cell
D. A loose connective tissue layer around each individual muscle cell
Which describes a muscle fascicle?
A. A single muscle cell
B. A connective tissue structure anchoring a muscle to bone
C. A bundle of muscle fibers surrounded by connective tissue
D. Several muscles grouped together, all performing related functions
C. A bundle of muscle fibers surrounded by connective tissue
The perimysium is a connective tissue sheath that surrounds which of the following? A. Muscle fascicles B. Individual muscle fibers C. Groups of muscle D. The entire muscle
A. Muscle fascicles
Select all that apply: Which are the functions of skeletal muscles? A. Vitamin D synthesis B. Movement C. Heat production D. Joint stability
B. Movement
C. Heat production
D. Joint stability
Select all that apply: The perimysium contains which of the following? A. Blood vessels B. Muscle spindles C. Nerves D. Bone tissue
A. Blood vessels
B. Muscle spindles
C. Nerves
The endomysium is a connective tissue sheath that wraps around which of the following? A. Muscle Fascicle B. Groups of Muscles C. Entire Muscle D. Muscle Fiber
D. Muscle Fiber
A. Muscle Fascicle: The perimysium surrounds fascicles.
B. Groups of Muscles: Groups of muscles are surrounded by fascia.
C. Entire Muscle: The entire muscle is surrounded by the epimysium.
Projections extending from the inner surface of the epimysium form which of the following? A. Sarcolemma B. Endomysium C. Fascia D. Perimysium
D. Perimysium
Which term refers to bundles of muscle fibers, wrapped in connective tissue, within a muscle? A. Striations B. Fascicles C. Compartments D. Tendons
B. Fascicles
Which describes the epimysium?
A. A connective tissue layer around each individual muscle cell
B. A connective tissue sheath surrounding an entire muscle
C. The plasma membrane of an individual muscle cell
D. A connective tissue sheath bundling many muscle fibers into a fascicle
B. A connective tissue sheath surrounding an entire muscle
Which term refers to a sheet of connective tissue that separates neighboring muscles or muscle groups? A. Fascia B. Endomysium C. Perimysium D. Epimysium
A. Fascia
Connective tissue structures that attach bone to muscle are called ______.
tendon
Which provides the extracellular environment for the muscle fiber and its associated nerve ending? A. Perimysium B. Endomysium C. Fascia D. Epimysium
B. Endomysium
Which term refers to a muscle that produces most of the force during a particular joint action? A. Fixator B. Synergist C. Agonist D. Antagoist
C. Agonist
A. Fixator: hold a bone still during a particular action.
B. Synergist: synergist aids the prime mover.
D. Antagonist: oppose the action of the prime mover.
The connective tissue layer that covers the entire muscle is called the______.
Epimysium
The ______ of a muscle refers to the identity of the nerve that stimulates it.
innervation
What is most likely to be the action of the extensor diagitorum? A. Extend the digit B. Rotate the thigh C. Open the eyes D. Flex the elbow
A. Extend the digit
What is a facia?
A. A thin sleeve of connective tissue surrounding an individual muscle fiber
B. The plasma membrane of a muscle cell
C. A thick sheet of connective tissue separating neighboring groups of muscles
D. A connective tissue sheath encircling an individual muscle fascicle
C. A thick sheet of connective tissue separating neighboring groups of muscles
Mulitple Select Question: Which are attachments of the orbicularis oris? A. Modiolus at angle of mouth B. Upper eyelids C. Skin around margin of orbit D. lower eyelids E. Tissue of lips
A. Modiolus at angle of mouth
E. Tissue of lips
The zygomatic bone and the superolateral angle of the mouth are the skeletal attachments for which muscles? A. Zygomaticus major B. Platysma C. Mentalis D. Buccinator
A. Zygomaticus major
Which muscle attaches to the lacrimal bone as well as to both the upper and lower eyelids? A. Nasalis B. Levator palpebrae superisoris C. Corrugator supercilii D. Orbticulairs oculi
D. Orbticulairs oculi
Knowing the innervation to each muscle enables clinicians to diagnose which of the following?
A. Damage to blood vessels serving muscles
B. Nerve, spinal cord, and brain stem injuries
C. Broken bones
D. Osteoarthristis
B. Nerve, spinal cord, and brain stem injuries
Which is the action of the frontal belly of the occipiofrontalis?
A. Evevates eyebrows; draws scalp forward and wrinkles forehead
B. Retracts scalp; fixes galea aponeurotica
C. Elevates upper eyelid; opens eye
D. Closes eye; aid in flow of tears across eye
A. Evevates eyebrows; draws scalp forward and wrinkles forehead
B. Retracts
What does the term "depressor" refer to in the name depressor labii inferioris? A. The length of the muscle B. The shape of the muscle C. The location of the muscle D. The action of the muscle
D. The action of the muscle
The orbicularis _____ is the muscle that attaches at the modiolus (angle) of the mouth and inserts in the tissue of the lips.
oris
The two parts of the occipitofrontalis, the frontalis, and occipitalis, act together to perform which actions?
A. Elevations of the eyelids to open the eye
B. Retraction of scalp
C. Elevation of the eyebrows
D. Compression of cheek
C. Elevation of the eyebrows
Multi-select question:
Name the attachments of the orbicularis oculi.
A. Eyelids; skin around margin of orbit
B. Zygomatic arch; fascia near ear
C. Lacrimal bone; medial angle of eyelid
D. Maxilla just below infraorbital foramen
C. Lacrimal bone; medial angle of eyelid
A. Eyelids; skin around margin of orbit
Which muscle is located at the corner of the mouth?
A. Temporalis
B. Zygomaticus major
C. Levator palpebrae superiors
D. Frontalis
B. Zygomaticus major
what is the action of the occipital belly of the occipitofrontalis?
A. Elevates upper eyelid; opens eye
B. Elevates eyebrows; draws scalp forward and wrinkles forehead
C. Closes eye; aids in flow of tears across eye
D. Retracts scalp; fixes galea aponeurotica
D. Retracts scalp; fixes galea aponeurotica
multi select
Which are the attachments of the orbicularis oris?
A. Skin around margin of orbit B. Lower eyelids C. Upper eyelids D. Modiolus at angle of mouth E. Tissue of lips
D. Modiolus at angle of mouth
E. Tissue of lips
Which describes the occipitofrontal?
A. A single, thin muscular dome that runs across the top of the head
B. A convergent muscle with a thick tendon that runs under the zygomatic arch
C. Two muscles connect together by a broad aponeurosis
D. A fusiform muscle with two heads
C. Two muscles connect together by a broad aponeurosis
What are the attachments of the orbiculairs oculi? A. Maxilla; below infraorbital foramen B. Eyelids; skin around margin of orbit C. Zygomatic arch; fascia near ear D. Muscles; skin at angle of mouth
B. Eyelids; skin around margin of orbit
Which muscles lies deep to the orbicularis oculi in the eyelid and orbit? A. Occipitalis B. Levator labii superioris C. Orbicularis oris D. Levator palpebrae superioris
B. Levator labii superioris
The occipitofrontalis consists of two muscles connected to each other by a broad aponeurosis. Which structure forms the anterior (forehead) portion of occipitofrontalis. A. Frontal belly B. Occipital belly C. Nasalis D. Mentalis
A. Frontal belly
Multi-select
Which are actions of the occipital belly of the occipitofrontalis?
A. Draws scalp forward B. Fixes galea aponeurotica C. Wrinkles skin of forehead D. Elevates eyebrows E. Retracts scalp
E. Retracts scalp
B. Fixes galea aponeurotica
Which muscle is sphinceter of the eyelid that encircles and closes the eye? A. Orbicularis oris B. Obricularis oculi C. Levator anguli oris D. Levator palpebrae superioris
B. Obricularis oculi
The two parts of the occipitofrontalis, the frontalis and the occipitalis, act together to preform which action?
A. elevation of the eyebrows
B. Compression of the cheek
C. Retraction of scalp
D. Elevation of the eyelids to open the eye
A. elevation of the eyebrows
What is the action of the orbicularis oculi?
A. Draws eyebrows medially and downward; reduces glare of bright sunlight
B. Elevates upper eyelid; opens eye
C. Closes the eye; aids in flow of tears across eye
D. Widens nostrils; narrow internal air passage between vestibule and nasal cavity
C. Closes the eye; aids in flow of tears across eye
The ______ palpebrae superioris muscle is located deep to the orbicularis oculi in the orbit and the eyelid, acts to open the eye.
levator
The anterior portion of the occipitofrontalis is the ______ belly.
Frontal
Which muscle contracts when you open your eye? A. Depressor anguli oris B. Nasalis C. Levator palpebrae superioris D. Orbiculairs oris
C. Levator palpebrae superioris
Which closes the lips? A. Buccinator B. Orbicualris Oculi C. Zygomaticus D. Orbiucalirs oris
D. Orbiucalirs oris
Contraction of the right scalene muscles tilts the head toward the right shoulder. What type of movement is this?
A. Contralateral
B. Ipsilateral
C. Bilateral
B. Ipsilateral
Which muscle lies deep to the orbiulairs oculi in the eyelid and orbit? A. Occipitalis B. Oribulairs oris C. Levator palpebrae superioris D. Levator labii superioris
C. Levator palpebrae superioris
multi-select Which are muscles of the anterior abdominal wall? A. Rectus abdominis B. Transverse abdominal C. Internal abdominal oblique D. Latissimus dorsi E. External abdominal oblique F. Diaphragm
A. Rectus abdominis
B. Transverse abdominal
C. Internal abdominal oblique
E. External abdominal oblique
Which is a complex of muscles that encircles the mouth? A. mentalis B. Orbicularis oris C. Orbicularis oculi D. Occipitalis
B. Orbicularis oris
Together the iliocostalis, the longissimus, and the spinalis form a muscle called the______ spinae.
erector
Multi-select
The perineum is bordered by which of the following boney landmarks?
A. Ischial tuberosisties B. Coccyx C. Pubic Symphysis D. Occipital protuerance E. Zygomatic arch
C. Pubic Symphysis
B. Coccyx
A. Ischial tuberosisties
Which muscle is the prime mover of inspiration? A. Diaphragm B. External intercostals C. pectorialis major D. Internal intercostals
A. Diaphragm
The rectus abdominis, transverse abdominal, and abdominal oblique muscles are all located in which part of the body?
A. Wrist and forearm
B. Pelvic floor
C. Anterior abdominal wall
D. Back
C. Anterior abdominal wall
Which muscle do you contract in order to straighten your back after bending at the waist?
A. Medial ptergoid
B. Rectus abdominis
C. Gluteus maximus
D. Erector spinae
D. Erector spinae
Contraction of the left sternocleidomastoid tiles the head toward the right. What type of movement is this?
A. Contralateral
B. Ipsilateral
C. Bilateral
A. Contralateral
