2015 anatomy endterm Flashcards
What is the relationship between the number of motor neurons recruited and the number of skeletal muscles innervated?
A) Several skeletal muscles are innervated by a single motor neuron
B) Several skeletal muscles are innervated by sensory and motor neuron
C) A motor neuron innervates only one skeletal muscle
D) A skeletal muscle is innervated by multiple motor neurons
A) Several skeletal muscles are innervated by a single motor neuron
The X-ray of a skull of a 60-year-old woman complaining from loss of taste sensation in the posterior part of the tongue showed abnormal bone growth and narrowing of the jugular foramina. The function of which nerve may be affected? A) Glossopharyngeal B) Trigeminal C) Vagus D) Vestibulocochlear
A) Glossopharyngeal
What characterize osteons?
A) it has a concentric bony lamella and lacunae
B) canaliculi with blood vessels
A) it has a concentric bony lamella and lacunae
A 65 years old female presented with arthritis in her knee. During the consultation, the doctor informed the patient that the articular cartilage of her knee’s joint are degenerating and won’t be able to repair/heal. On what scientific basis did the doctor base his conclusion?
A) The articular cartilage filled with collagen II fiber
B) The articular cartilage doesn’t have many chondrocytes
C) The articular cartilage doesn’t have a perichondrial layer
D) The articular cartilage doesn’t receive any nerve supply
C) The articular cartilage doesn’t have a perichondrial layer
Which of the following is an example of a multipennate muscle?
A) biceps brachii
B) pectoralis major
C) deltoid
C) deltoid
Which muscle is the antagonist to the prime mover of elbow flexion? A) biceps brachii B) triceps brachii C) brachialis D) serratus anterior
B) triceps brachii
What prevents infection in the retropharyngeal from passing to the lateral aspect of the neck? A) Alar fascia B) Prevertebral fascia C) Pretracheal fascia D) Carotid sheath fascia
D) Carotid sheath fascia
55-year old male patient experiences an infection in the right axilla. Where did the infection originates from?
A) prevertebral fascia
B) pretrochal fascia
A) prevertebral fascia
Extends to axilla as axillary sheath around the brachial plexus
A person has External branchial fistulae. What defected embryonic process was the response for this?
A) Failure of the first arch to grow caudally
B) Failure of the second arch to grow caudally
C) Failure of the third arch to grow caudally
B) Failure of the second arch to grow caudally
A newborn was diagnosed with micrognathia, cleft palate, and posteriorly placed tongue. Which pharyngeal arch was affected? A) first B) second C) third D) forth
A) first
What muscle has the least myofibrils in its sarcoplasm and the highest amount of mitochondria? A) Skeletal muscle B) Cardiac muscle C) Mononucleated muscle D) Multinucleated muscle
B) Cardiac muscle
A 3-year-old child touched a hot pan and then quickly removed his hand. What type of fibers did the hand receive the information from? A) somatic motor B) visceral motor C) somatic sensory D) visceral sensory
A) somatic motor
During a thyroidectomy, the anesthetist kept feeling the pulse by pressing his fingers just anterior to the right auricle. Which vessel was it? A) Maxillary B) Superficial temporal C) Supraorbital D)Transverse facial
B) Superficial temporal
A piercing wound in a middle-aged woman leads to weakness and subsequent functional loss in the right trapezius muscle. Which nerve may be injured? A) Glossopharyngeal B) Great auricular C) Transverse cervical D) Spinal accessory
D) Spinal accessory
A man was stabbed on the middle posterior border of the sternocleidomastoid, which vessel would most likely be affected? A) common carotid B) internal jugular vein C) external jugular vein D) subclavian artery
C) external jugular vein
