Anatomy Flashcards
Midshaft fractures of the humerus risk injury to which structures?
Deep brachial artery and radial nerve
How do patients with femoral nerve lesions present?
Weakness of the quadriceps muscle, loss of patellar reflex, and loss of sensation over the anterior and medial thigh and medial leg
Pudendal nerve
Provides motor and sensory innervation to the perineal region
Clinical presentation of pudendal nerve injury?
Stretch injury can occur during labor. Weakness of the perineal musculature causing fecal and urinary incontinence, perineal pain, and sexual dysfunction
Characteristic signs of common peroneal nerve injury?
Foot drop and steppage gait
The middle meningeal artery is a branch of which artery?
Maxillary
Where does the maxillary artery enter the skull?
Foramen spinosum and courses intracranially deep to the pterion
What is the pterion?
Where the frontal, temporal, parietal, and sphenoid bones meet
Branches of the external iliac artery
Inferior epigastric and deep circumflex iliac artery
What does the inferior epigastric artery supply?
Lower abdominal wall
Where does the saphenous vein drain?
Into the femoral vein within the region of the femoral triangle, a few centimeters inferolateral to the pubic tubercle
What shoulder muscle performs abduction?
Supraspinatus
Sensory loss over the later shoulder and weakness on shoulder abduction indicates damage to which nerve?
Axillary nerve
Nerve at risk during thyroidectomy. Which muscle does it innervate?
External branch of the superior laryngeal nerve. Innervates the cricothyroid muscle.
What causes a cleft lip?
When the maxillary prominence fails to fuse with the intermaxillary segment during the fifth-sixth week of embryonic development
