Anatomy Flashcards
What is the primary muscle located in the pectoral region?
Pectoralis major
True or False: The pectoral region includes the chest area.
True
What are the two main muscles in the pectoral region?
Pectoralis major and pectoralis minor
Fill in the blank: The pectoralis major is responsible for _____ of the shoulder joint.
Flexion, adduction, and internal rotation
What is the origin of the pectoralis major muscle?
Clavicle, sternum, and costal cartilages of the first six ribs
Which nerve innervates the pectoralis major?
Medial and lateral pectoral nerves
True or False: The pectoralis minor lies beneath the pectoralis major.
True
What is the primary function of the pectoralis minor muscle?
Stabilizes the scapula by drawing it anteriorly and inferiorly
Which structure does the pectoralis minor attach to?
Coracoid process of the scapula
What is the clinical significance of the pectoral region?
It is involved in various conditions such as pectoral strain and thoracic outlet syndrome.
Multiple Choice: Which artery supplies blood to the pectoral region? A) Subclavian artery B) Brachial artery C) Femoral artery D) Carotid artery
A) Subclavian artery
What is the role of the intercostal muscles in the pectoral region?
Assist in respiration by elevating the ribs
Fill in the blank: The pectoral region is primarily involved in _____ movements.
Upper limb
What is the insertion point of the pectoralis major?
Lateral lip of the bicipital groove of the humerus
True or False: The pectoral fascia is a connective tissue layer covering the pectoral muscles.
True
What is a common injury associated with the pectoral region?
Pectoralis major tear
Which imaging technique is often used to assess injuries in the pectoral region?
MRI (Magnetic Resonance Imaging)
What is the function of the clavicular head of the pectoralis major?
Flexion of the humerus
Fill in the blank: The pectoralis minor is located _____ to the pectoralis major.
Deep
What is the typical presentation of a pectoralis major injury?
Pain, swelling, and weakness in shoulder movements
True or False: The pectoral region is involved in the mechanics of pushing movements.
True
What is the action of the pectoralis major during a bench press?
Adduction and flexion of the shoulder
Which muscles assist the pectoralis major in arm movements?
Deltoid and latissimus dorsi
Multiple Choice: Which condition is characterized by compression of nerves or blood vessels in the pectoral region? A) Carpal Tunnel Syndrome B) Thoracic Outlet Syndrome C) Sciatica D) Tennis Elbow
B) Thoracic Outlet Syndrome
What is the role of the serratus anterior muscle in relation to the pectoral region?
It helps to stabilize the scapula against the thoracic wall.
Fill in the blank: The pectoral region is bounded superiorly by the _____ and inferiorly by the _____ muscle.
Clavicle; diaphragm
True or False: The pectoral region contains lymph nodes that are important for breast cancer staging.
True
What is the significance of the axillary region in relation to the pectoral region?
It contains important vessels and nerves that supply the upper limb.
What is the function of the subclavius muscle?
Stabilizes the clavicle during shoulder movements
Multiple Choice: Which structure is located in the pectoral region and is essential for breast tissue? A) Thorax B) Axilla C) Pectoral fascia D) Subcutaneous tissue
D) Subcutaneous tissue
Fill in the blank: The pectoral region is primarily composed of _____ tissue.
Muscle and adipose
What is the role of the pectoral girdle?
Connects the upper limb to the trunk
True or False: The pectoral region can be affected by conditions such as costochondritis.
True
What is the primary blood vessel supplying the pectoralis minor?
Thoracoacromial artery
What is the clinical test used to assess pectoralis major strength?
The arm adduction test
Fill in the blank: The pectoral region is involved in _____ and _____ of the arm.
Flexion; extension
What are the two heads of the pectoralis major?
Clavicular head and sternal head
True or False: The pectoralis major can contribute to shoulder dislocation.
True
What is the primary action of the pectoralis minor?
Protraction of the scapula
Fill in the blank: The pectoralis major is a _____ muscle.
Superficial
What is the function of the thoracic fascia in relation to the pectoral region?
Provides support and compartmentalization for muscles
Multiple Choice: Which of the following is NOT a function of the pectoralis major? A) Flexion B) Extension C) Adduction D) Internal rotation
B) Extension
What is the role of the deltoid muscle in the pectoral region?
Assists with arm abduction and flexion
True or False: The pectoral region can be assessed through physical examination techniques.
True
Fill in the blank: The pectoralis major is innervated by the _____ nerves.
Medial and lateral pectoral
What is the anatomical term for the area between the pectoralis major and pectoralis minor?
Clavipectoral fascia
