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169 Terms
1
adductor muscles All description
The adductor muscle group is made up of three muscles: the adductor magnus, adductor longus, and adductor brevis. They run from the inferior pubis and insert on the posterior femur. They are also deep to the gracilis. This muscle group flexes the thigh and allows it to rotate medially.
attaches to the radial tuberosity on the radius and flexes the forearm.
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Biceps brachii location
lies on the upper arm between the shoulder and the elbow
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biceps branchii joint movement
It is a stronger forearm supinator when the elbow is flexed
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Biceps femoris location/ movement
-The lateral muscle of the posterior thigh -Because it spans from the hip to the knee joint, the biceps femoris can flex the knee and extend the thigh.
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Biceps femoris location/ movement
-The lateral muscle of the posterior thigh. -Because it spans from the hip to the knee joint, the biceps femoris can flex the knee and extend the thigh.
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biceps femoris origin/ insertion
It has two heads, one on the ischial tuberosity and another on the linea aspera of the femur; and two origins, on the lateral condyle of the tibia and on the head of the fibula
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Both the external and internal oblique muscles act with rectus abdominis to
flex the vertebral column to compress the abdomen. They also increase the pressure in the abdomen during defecation, urination, and childbirth.
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Brachialis location
brachialis is found deep to the biceps brachii
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brachialis movement
is also used to flex the forearm.
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Brachioradialis location
superficial muscle located on the lateral side of the anterior surface of the forearm. superficial to the supinator and later to the pronator teres.
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Brachioradialis movement
allows you to shake hands
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Buccinator Function/ Action
Used to suck in your cheeks
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Buccinator Location
skin of the cheek between the mandible and maxilla
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Coracobrachialis attachment/ origin
Attaches to the coracoid process on the scapula and shares common origin with the biceps brachii. It is also deep to the biceps brachii,
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Coracobrachialis location
located more toward the superior end of the humerus, and medially.
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Deltoid Attachments 3
attaches to the deltoid tuberosity of the humerus. The posterior portion of the deltoid extends the arm, while the anterior portion flexes the arm. The middle portion helps to abduct the humerus.
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Deltoid location
Large muscle covering the shoulder joint. composed of three portions (posterior, middle, and anterior)
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Deltoid origin
originating on the spine of the scapula, the acromion process, and the distal end of the clavicle,
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Depressor labii function/ Action
Pulls lower lip downward and outward
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Depressor labii location
skin of the lower lip (Mandible)
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DOA
Direction of Action
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dorsal (foot) muscles
toe extensors
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Extensor carpi muscles movement/ Location
muscles are responsible for the extension and adduction of the wrist. They consist of the extensor carpi ulnaris and the extensor carpi radialis.
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extensor digitorum movement
muscles responsible for the extension of the phalanges,
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Extensor digitorum muscles location
located within the phalanges on the posterior side of the hand.
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Extensor pollicis muscles movement/ location
Responsible for the movement of the thumb, located on the posterior side of the thumb or metacarpal.
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external intercostals DOA/ Origin
They originate on the lower margin of the rib immediately superior to the muscle
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external intercostals function
They function to elevate the ribs for inhalation.
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External intercostals insertion
the superior border of the rib below the origin.
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external intercostals location
span the gap between the ribs and are superficial to the internal intercostals
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External oblique function
thin, membranous muscle that covers the side of the abdomen.
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External oblique location
external oblique is lateral to the rectus abdominis
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External Oblique origin/ insertion
originates on the inferior borders of the lower eight ribs and inserts on the anterior portion of the iliac crest.
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Fibularis muscles location and movement
-The three muscles that make up the fibularis muscle are the longus, brevis, and tertius.
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Fibularis muscles origin and insertion
Origin: Fibular Insertion: metatarsals of foot
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Flexor carpi muscles location
muscles consist of the flexor carpi ulnaris and flexor carpi radialis muscles. found on the anterior region of your wrists.
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flexor carpi muscles movement
flexion of the wrist. They allow the palm of the hand to flex toward the front of the forearm
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flexor digitorum muscles location / movement
inner phalanges , These muscles allow for flexion of the phalanges
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Flexor pollicis muscles location/ movement
These muscles are responsible for the movement of the thumb, especially flexion.
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Frontalis function / Action
It is involved in actions such as raising the eyebrows, wrinkling the forehead, and pulling the scalp forward.
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Frontalis location
covers the frontal bone of the skull. (Frontal Bone)
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Gastrocnemius location and movement
The gastrocnemius makes up what is considered to be your "calf" region.
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Gastrocnemius origin and insertion
O: condyles of femur, I: calcaneus
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gluteus maximus joint movement/ bone
Hip extension, lateral rotation, and abduction of the hip. Moves femur
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gluteus maximus location/ function
is the large, superficial muscle of the buttocks/ It is a powerful extensor of the hip joint and also aids in external rotation and abduction of the hip.
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Gluteus maximus origin/insertion
-Posterior part of the ilium, sacrum, and coccyx. -Greater trochanter of the femur
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Gluteus Medius location/ function
-Situated in the upper part of the buttocks, beneath the gluteus maximus -It is primarily responsible for the abduction of the hip, and it helps with medial rotation of the hip.
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Gluteus Medius movement/ Joint movement
-Abducts the thigh (moves the femur away from the body's midline) crosses the hip joint
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Gluteus Medius origin/ insertion
origin: lateral surface of ilium insertion: greater trochanter of femur
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gluteus minimus location/ function
-Deep to the gluteus medius, this muscle is also in the buttocks area. -Similar to the gluteus medius, it assists with abduction of the hip and medial rotation.
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gluteus minimus origin/ insertion
-External surface of the ilium. -Anterior surface of the greater trochanter of the femur. - hip joint movement
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Gracialis location/ movement / Joint movement
-most superficial muscle of the medial thigh ,also the most superficial of the thigh adductors -passes over the knee joint, allowing the knee to flex and to adduct the thigh.
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Gracialis origin and insertion
-starts near the pubic symphysis -inserting near the tibial tuberosity
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Hamstrings muscle group:
Together, three major muscles of the posterior thigh make up the hamstring group. These muscles are the biceps femoris, semitendinosus, and semimembranosus.
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Iliacus location
A flat, triangular muscle that lies deep within the pelvis
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iliacus movement
Moves the femur toward the pelvis., and crosses the hip joint
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iliacus origin/ insertion
Origin: Iliac fossa of the pelvis. Insertion: Lesser trochanter of the femur (blends with the psoas major).
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Iliotibial Tract
Joints Crossed: Hip joint and Knee joint The IT band crosses both the hip and knee joints. It stabilizes the hip and knee during dynamic activities like running or walking.
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iliotibial tract origin/ insertion
-Iliac crest -Lateral condyle of the tibia
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Infraspinatus location
inferior to the spine of the scapula, and on the posterior side of the scapula
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infraspinatus movement
This muscle rotates the humerus laterally.
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infraspinatus origin/ attachment
starts in the infraspinous fossa and connects on the posterior portion of the greater tubercle on the humerus.
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internal intercostals function
act to depress the ribs for forced expiration during exercise.
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Internal Intercostals location
The internal intercostals run deep to the external intercostals.
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Internal Intercostals origin/ insertion
originate on the upper margin of the lower ribs and insert on the upper ribs along the lower border.
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internal oblique location
muscle lies deep to the external oblique
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internal oblique origin/ insertion
originate on the lower abdomen and insert on the lower ribs and the xiphoid process.
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Lattisimus Dorsi location
a large muscle that wraps around the lower back.
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lattsimus dorsi attachment
close to the attachment of the pectoralis major.
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lattsimus dorsi movement
muscle acts to adduct and extend the humerus, as when pulling a rope toward you.
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lattsimus dorsi origin/ Insertion
broad origin from the sacral and lumbar vertebrae up to the sixth thoracic vertebra, sweeps up and inserts on the humerus
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Levator scapulae location
deep to the trapezius muscle
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levator scapulae movement
raise the scapula. However, it also tilts back the head.
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levator scapulae origin / attachment
connects the transverse processes of the C1 through C4 vertebrae, and connects to the superior medial border of the scapula
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Masseter crosses joint
crosses the temporomandibular joint (TMJ)
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Masseter function
responsible for elevating the mandible (closing the jaw), helping with chewing.
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Masseter Joint movement
moves the temporomandibular joint (TMJ) by elevating the jaw.
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Masseter Location/ Origin
the zygomatic arch. This is a bony ridge on the skull's side that forms the cheekbone's upper part.