Ch 10 Anatomy Muscle Gross Anatomy
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
