Ch 10 Anatomy Muscle Gross Anatomy

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The extensors of the knee are found in the ________ compartment of the thigh.

Anterior

Flexion

Anterior neck muscles

What nerve provides innervation to the deltoid muscle?

Axillary

Which of the following muscles are flexors of the elbow?

Brachioradialis, biceps brachii, brachialis

what are the two main roles of the laryngeal muscles?

Close off larynx during swallowing, and change pitch of the voice

What is the main role of the the cutaneous skeletal muscles of the face?

Communication through facial expressions

The deltoid has multiple points of origin. Which of the following is NOT an origin of the deltoid muscle?

Coracoid process. Points of origin Clavicle, acromion process, and scapular spine

The insertion of the deltoid is the

Deltoid tuberosity

What body systems have an opening through the pelvic floor?

Digestive, reproductive, urinary

Name the action of the platysma

Draws lower lip downward; wrinkles skin of neck.

muscles that are located within the actual structure being moved

Intrinsic

Lateral flexion

Lateral neck muscles

The origin of the brachioradialis muscle

Lateral ridge of humerus

The vertical band of tough connective tissue at the midline of the abdomen that serves as attachment point for abdominal muscles.

Linea alba

The site of muscle attachment that does not move during contraction

Muscle Origin

What are the origins of the trapezius/

Nuchal ligament, Spinous processes, Mandibular Angle, Occipital protuberance.

Which of the following are characteristics used in the naming of individual muscles?

Origin and insertion, size and shape, and region of the body

Which of the following muscles DO NOT attach the scapula to the thorax?

Pectoralis Major, and Subscapularis

Extension

Posterior neck muscles

The triceps brachii is classified as the ________ in the extension of the elbow.

Prime mover

What muscles are considered the major muscles of mastication?

Ptergoids, temporalis, and masseter

The _______ nerve provides innervation for the brachioradialis.

Radial

The biceps brachii inserts in the ________ tuberosity.

Radial

What muscles attach the scapula to the thorax?

Serratus anterior, Rhomboideus muscles, pectoralis minor, Levator scapulae, and trapezius

Name the insertion of the platysma

Skin over the inferior border of mandible.

Which of the following describe the general roles of the larynx, pharynx, and soft palate muscles?

Speech productions, swallowing, directing food passage

The brachioradialis inserts on the _______ process of the _______.

Styloid process, of the radius

The origin of the long head of biceps brachii

Superior margin (tubercle) of the glenoid cavity

supraspinatus

abduction

What is muscle that opposes the agonists' action at a joint

antagonist

Which of the following is NOT a role of the anterior abdominal wall muscles?

extension of vertebral column. Roles include aids urinary and digestive system, protection, rotation of vertebral column, decrease volume of abdominal cavity, and flexion of vertebral column

what muscle medially rotates the thigh?

gluteus medius, tensor fasciae latae

what nerve innervates most of the tongue muscles?

hypoglossal nerve

Extrinsic hand muscles are located

in the forearm

Intrisic hand muscles are located

in the hand

By definition, muscles that are located within the structure being moved are known as _______ muscles.

intrinsic

infraspinatus

lateral rotation

subscapularis

medial rotation

Biceps brachii is innervated by the ______ nerve

musculocutaneous nerve

The diamond shaped area inferior to the pelvic diaphragm

perineum

The muscle that produces most of the force during a particular movement

prime mover

Four heads of the quadriceps femoris

rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

What is the action of the biceps brachii

supination; flexes shoulder and elbow

what is the action of the deltoid?

Abducts and rotates arm and extends the shoulder.

The trapezius has multiple origins. Which is NOT an origin/

Acromion process

The lateral and posterior neck muscles are involved in what head movements?

Extension, lateral flexion, and rotation.

What nerve provides innervation for the platysma?

Facial nerve

Name the origin of the platysma.

Fascia of deltoid and pectoralis major.

Action of the brachioradialis

Flexes the elbow.

When a muscle has multiple origins, each origin is referred to as a

Head

Belly

The largest portion of muscle between the origin and insertion.

muscle insertion

The site of muscle attachment that is moved upon contraction; usually, the lateral or distal end of a muscle associated with the limbs; also called mobile end.

The triceps brachii has how many heads?

Three

Extensors of the elbow

Triceps Brachii, Anconeus


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