Exam 2 Muscles Locations, Origins, insertions, movements

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.

Anterior muscles of the chest and abdomen

Pectoralis major, Serratus anterior, External intercostals ,Internal intercostals ,Rectus abdominis, External oblique, Internal Oblique

Biceps are at which joint movement?

Flexion

Biceps are which axis of rotation

Horizontal

biceps brachii attachment/ movement

attaches to the radial tuberosity on the radius and flexes the forearm.

Biceps brachii location

lies on the upper arm between the shoulder and the elbow

biceps branchii joint movement

It is a stronger forearm supinator when the elbow is flexed

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.

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.

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

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.

Brachialis location

brachialis is found deep to the biceps brachii

brachialis movement

is also used to flex the forearm.

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.

Brachioradialis movement

allows you to shake hands

Buccinator Function/ Action

Used to suck in your cheeks

Buccinator Location

skin of the cheek between the mandible and maxilla

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,

Coracobrachialis location

located more toward the superior end of the humerus, and medially.

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.

Deltoid location

Large muscle covering the shoulder joint. composed of three portions (posterior, middle, and anterior)

Deltoid origin

originating on the spine of the scapula, the acromion process, and the distal end of the clavicle,

Depressor labii function/ Action

Pulls lower lip downward and outward

Depressor labii location

skin of the lower lip (Mandible)

DOA

Direction of Action

dorsal (foot) muscles

toe extensors

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.

extensor digitorum movement

muscles responsible for the extension of the phalanges,

Extensor digitorum muscles location

located within the phalanges on the posterior side of the hand.

Extensor pollicis muscles movement/ location

Responsible for the movement of the thumb, located on the posterior side of the thumb or metacarpal.

external intercostals DOA/ Origin

They originate on the lower margin of the rib immediately superior to the muscle

external intercostals function

They function to elevate the ribs for inhalation.

External intercostals insertion

the superior border of the rib below the origin.

external intercostals location

span the gap between the ribs and are superficial to the internal intercostals

External oblique function

thin, membranous muscle that covers the side of the abdomen.

External oblique location

external oblique is lateral to the rectus abdominis

External Oblique origin/ insertion

originates on the inferior borders of the lower eight ribs and inserts on the anterior portion of the iliac crest.

Fibularis muscles location and movement

-The three muscles that make up the fibularis muscle are the longus, brevis, and tertius.

Fibularis muscles origin and insertion

Origin: Fibular Insertion: metatarsals of foot

Flexor carpi muscles location

muscles consist of the flexor carpi ulnaris and flexor carpi radialis muscles. found on the anterior region of your wrists.

flexor carpi muscles movement

flexion of the wrist. They allow the palm of the hand to flex toward the front of the forearm

flexor digitorum muscles location / movement

inner phalanges , These muscles allow for flexion of the phalanges

Flexor pollicis muscles location/ movement

These muscles are responsible for the movement of the thumb, especially flexion.

Frontalis function / Action

It is involved in actions such as raising the eyebrows, wrinkling the forehead, and pulling the scalp forward.

Frontalis location

covers the frontal bone of the skull. (Frontal Bone)

Gastrocnemius location and movement

The gastrocnemius makes up what is considered to be your "calf" region.

Gastrocnemius origin and insertion

O: condyles of femur, I: calcaneus

gluteus maximus joint movement/ bone

Hip extension, lateral rotation, and abduction of the hip. Moves femur

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.

Gluteus maximus origin/insertion

-Posterior part of the ilium, sacrum, and coccyx.
-Greater trochanter of the femur

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.

Gluteus Medius movement/ Joint movement

-Abducts the thigh (moves the femur away from the body's midline)
crosses the hip joint

Gluteus Medius origin/ insertion

origin: lateral surface of ilium
insertion: greater trochanter of femur

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.

gluteus minimus origin/ insertion

-External surface of the ilium.
-Anterior surface of the greater trochanter of the femur.
- hip joint movement

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.

Gracialis origin and insertion

-starts near the pubic symphysis
-inserting near the tibial tuberosity

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.

Iliacus location

A flat, triangular muscle that lies deep within the pelvis

iliacus movement

Moves the femur toward the pelvis., and crosses the hip joint

iliacus origin/ insertion

Origin: Iliac fossa of the pelvis.
Insertion: Lesser trochanter of the femur (blends with the psoas major).

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.

iliotibial tract origin/ insertion

-Iliac crest
-Lateral condyle of the tibia

Infraspinatus location

inferior to the spine of the scapula, and on the posterior side of the scapula

infraspinatus movement

This muscle rotates the humerus laterally.

infraspinatus origin/ attachment

starts in the infraspinous fossa and connects on the posterior portion of the greater tubercle on the humerus.

internal intercostals function

act to depress the ribs for forced expiration during exercise.

Internal Intercostals location

The internal intercostals run deep to the external intercostals.

Internal Intercostals origin/ insertion

originate on the upper margin of the lower ribs and insert on the upper ribs along the lower border.

internal oblique location

muscle lies deep to the external oblique

internal oblique origin/ insertion

originate on the lower abdomen and insert on the lower ribs and the xiphoid process.

Lattisimus Dorsi location

a large muscle that wraps around the lower back.

lattsimus dorsi attachment

close to the attachment of the pectoralis major.

lattsimus dorsi movement

muscle acts to adduct and extend the humerus, as when pulling a rope toward you.

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

Levator scapulae location

deep to the trapezius muscle

levator scapulae movement

raise the scapula. However, it also tilts back the head.

levator scapulae origin / attachment

connects the transverse processes of the C1 through C4 vertebrae, and connects to the superior medial border of the scapula

Masseter crosses joint

crosses the temporomandibular joint (TMJ)

Masseter function

responsible for elevating the mandible (closing the jaw), helping with chewing.

Masseter Joint movement

moves the temporomandibular joint (TMJ) by elevating the jaw.

Masseter Location/ Origin

the zygomatic arch. This is a bony ridge on the skull's side that forms the cheekbone's upper part.

Muscles Never

push

muscles of FACIAL expression

frontalis, Depressor Labii , orbicularis oculi, orbicularis oris, zygomaticus, buccinator,

Muscles of Mastication

masseter and temporalis

Muscles of the forearm

Pronator teres, Palmaris longus, Flexor carpi muscles, Flexor digitorum muscles, Flexor pollicis muscles, Supinator, Brachioradialis, Extensor carpi muscles, Extensor digitorum muscles, Extensor pollicis muscles.

muscles of the Pelvic and Gluteal Region

iliacus, Psoas major, Gluteus maximus, Gluteus medius, Gluteus minimus, Piriformis, Teawsnsor fasciae latae, Iliotibial tract

Muscles of the Shoulder

Supraspinatus, Infraspinatus, Subscapularis, Teres minor, Teres major, Levator scapulae, Deltoid

Muscles of the upper arm

biceps brachii, brachialis, coracobrachialis, triceps brachii

Muscles that cross the elbow joint

move the forearm

Muscles that cross the joints of the digits

move fingers

Muscles that cross the SC joint (Sternoclavicular Joint)

Move the shoulder

Muscles that cross the shoulder joint

move the arm

muscles that cross the wrist joint

move the hand

orbicularis oculi Function/ Action

Closes eyelids, squints, and blinks

orbicularis oculi Location

The skin around the eyelids (Frontal bone, maxilla, lacrimal bone)

orbicularis oris function/ Action

Closes and puckers lips

Orbicularis Oris location

Skin around the lips (Maxilla, mandible)

palmaris longus function/ movement

palmaris longus has a tendon that passes through your wrist and into your hand.

palmaris longus location

This is a slender, flat muscle found in the forearm, on the anterior side.