Lab Practical #3 Flashcards
Characteristics of skeletal muscle?
Striated, voluntary, multinucleated. Looks like the rods
Characteristics of cardiac muscle?
Striated, involuntary, branches, 1 nucleus. Looks like ham or has gaps
Characteristics of smooth muscle?
Unstriated, involuntary, 1 nucleus. Spindly and more wavy than cardiac
Functions of muscles?
Movement, stability, control of body openings and passageways, heat production, glycemic control
Muscle shapes?
Fusiform, parallel, triangular, unipennate, bipennate, multipennate, and circular
What is the origin?
Point of attachment for a muscle that doesn’t move
What is the insertion?
Point of attachment for a muscle that moves
What is an action?
Movement produced by contraction of a particular muscle
Where is the digastric muscle?
Below the chin, off center. Straight, and angles off toward the ear
Where is the stylohyoid muscle?
Diagonal and thin, from ear to hyoid bone
Where is the mylohyoid muscle?
Kind of triangular and thick from chin to mid-jaw, extending to hyoid. Inferior to digastric muscle
Go locate the digastric muscle
Done
Go locate the stylohyoid muscle
Done
Go locate the mylohyoid muscle
Done
Go locate the sternohyoid muscle
Done
Where is the sternohyoid muscle?
Long, extending from hyoid bone down the neck. Looks like a ray
Go locate the sternocleidomastoid muscles
Done
Where is the sternocleidomastoid muscle?
Side of the neck, from temporal bones/mastoid process to the sternum. Rectangular
Locate the temporalis muscle
Done
Where is the temporalis muscle?
Over temporal bones
Locate the occipitalis muscle
Done
Where is the occipitalis muscle?
Back of head
Locate the masseter muscle
Done
Where is the masseter muscle?
Back of the jaw
Locate the frontalis muscle
Done
Where is the frontalis muscle?
Forehead
Locate the orbicularis oculi muscle
Done
Where is the orbicularis oculi muscle?
Circling the eyes
Locate the nasalis muscle
Done
Where is the nasalis muscle?
Nose
Locate the zygomaticus major muscle
Done
Where is the zygomaticus major muscle?
Diagonal from the corner of the mouth to the outer eye. Lower than minor
Locate the zygomaticus minor muscle
Done
Where is the zygomaticus minor muscle?
From the corner of the mouth diagonal, higher than major
Locate the orbicularis oris muscle
Done
Where is the orbicularis oris muscle?
Circling lips
Locate the buccinator muscle
Done
Where is the buccinator muscle?
Middle of cheeks, kinda deep and flat
Locate the pectoralis major muscles
Done
Where are the pectoralis major muscles?
Boobs
Locate the serratus anterior muscles
Done
Where are the serratus anterior muscles?
Anterior view, kind of the flayed part of the ribs beneath and lateral to pecs
Locate the transverse abdominal muscle
Done
Where is the transverse abdominal muscle?
Side of stomach, deepest of the walls. It’s the largest and it sits under the ribs
Locate the external abdominal muscle
Done
Where is the external abdominal muscle?
Side of stomach, most superficial of the walls. A bit higher than the transverse, covers a few ribs
Locate the internal abdominal muscle
Done
Where is the internal abdominal muscle?
Side of stomach, middle of the walls. Mostly focused on thr sides
Locate the rectus abdominis
Done
Where is the rectus abdominis?
6-pack area
Where is the linea alba?
The line of fascia running down the chest
Locate the linea alba
Done
Locate the trapezius muscles
Done
Where are the trapezius muscles?
Diamond-shaped ones on the back of the neck
Locate the deltoid muscle
Done
Where is the deltoid muscle?
Basically the shoulder muscle
Locate the supraspinatus tendon
Done
Where is the supraspinatus tendon?
On the scapula, it’s like resting on/above that raised horizontal ridge. It’s kind of on top of the shoulder a bit
Locate the infraspinatus tendon
Done
Where is the infraspinatus tendon?
Right below the raised horizontal part of the scapula, pretty thick and overlays a lot of it
Locate the teres major
Done
Where is the teres major tendon?
Bottom of the scapula
Locate the teres minor
Done
Where is the teres minor tendon?
Like, on the outer half of the scapula, above teres major and below infraspinatus
Locate the subscapularis
Done
Where is the subscapularis?
Covering the anterior surface of the scapula. Deep to the actual bone
Locate the triceps brachii
Done
Where is the triceps brachii?
From a posterior view, below the scapula in the upper arm and sorta medial
Locate the biceps brachii
Done
Where is the biceps brachii?
From an anterior view of the upper arm, it’s the 2 muscles taking up most of the upper arm w/ the 2 thin attachments to the scapula
Locate the brachialis
Done
Where is the brachialis?
From an anterior view, in the lower half of the upper arm, beneath the biceps brachii
Locate the brachioradialis
Done
Where is the brachioradialis?
From an anterior view, on the lateral side of the forearm around the elbow area
Locate the pronator teres
Done
Where is the pronator teres?
In anterior view, diagonal from elbow center to thumb side of arm
Locate the flexor carpi radialis
Done
Locate the flexor carpi ulnaris
Done
Where is the flexor carpi ulnaris?
Running up the pinkie basically in anatomical position
Locate the palmaris longus
Done
Where is the palmaris longus?
In the forearm, anterior view, spindle shaped and running from the elbow to all of the fingers. Between flexor carpi ulnaris and radialis
Locate the extensor carpi ulnaris
Done
Where is the extensor carpi ulnaris?
Running down the forearm, when the palm is down, near the pinkie side
Locate the extensor carpi radialis
Done
Where is the extensor carpi radialis?
From palm-down anterior view, in the forearm, next to the brachioradialis, from elbow to thumb
Locate the extensor digitorum
Done
Where is the extensor digitorum?
“Back” of the hand up to the middle of the forearm
Locate the tensor fasciae
Done
Where is the tensor fasciae?
In anterior view, kinda where the hip dips are. Upper, outer leg
Locate the adductor magnus
Done
Where is the adductor magnus?
In the middle of the inner thigh, flat and rectangular and reaching to the knee
Locate the adductor longus
Done
Where is the adductor longus?
In an anterior view, in the thigh and sorta in the center. Connecting from pelvis to femur and above the magnus
Locate the gracilis
Done
Where is the gracilis?
In an anterior view, the thin muscle running down the inner thigh
Locate the sartorius
Done
Where is the sartorius?
In an anterior view, the long muscle running diagonally down the thigh. Then it continues to the knee
Locate the vastus lateralis
Done
Where is the vastus lateralis?
In an anterior view, in the thigh and on the lateral side of the femur
Locate the rectus femoris
Done
Where is the rectus femoris?
In an anterior view of the thigh, it basically overlays the femur
Locate the vastus medialis
Done
Where is the vastus medialis?
In an anterior view of the thigh, medial to the thigh bone and next to the rectus femoris
Locate the vastus intermedius
Done
Where is the vastus intermedius?
In an anterior view of the thigh, deep to the rectus femoris
