Anatomy

Which of the following statements regarding the nervous system is correct There are more cranial nerves than spinal nerves All branches of each spinal nerve have either motor or sensory axons, but not both. The dorsal and ventral rami of spinal nerves branch off of the spinal nerve far from the spinal cord segment A spinal nerve is formed when a dorsal root joins a ventral root The central nervous system consists of cranial and spinal nerves

A spinal nerve is formed when a dorsal root joins a ventral root

Which of the following statements is correct? Skeletal and cardiac muscle are striated Skeletal and smooth muscle are under voluntary control Nociception is muscle position sense Somatic nerves regulate how cardiac muscle contracts Autonomic nerves innervate skeletal muscle

Skeletal and cardiac muscle are striated

Which of the following statements is correct regarding the apical ectodermal ridge (AER)? The AER is a structure of neural crest cells at the distal end of the limb bud, guiding further limb development. The AER is a structure of endodermal cells at the proximal end of the limb bud, guiding further limb development. The AER is a structure of mesodermal cells at the proximal end of the limb bud, guiding further limb development. The AER is a structure of ectodermal cells at the distal end of the limb bud, guiding further limb development. The AER is not involved in limb development.

The AER is a structure of ectodermal cells at the distal end of the limb bud, guiding further limb development.

Choose the correct statement: The thumb is lateral to the pinkie. A mid sagittal plane divides the body into equal upper and lower halves. In the anatomic position, the feet are hips width apart and the palms face backwards. Superior and inferior are terms that describe structures relative to a coronal plane. Anterior and dorsal are synonymous terms.

The thumb is lateral to the pinkie

Which of the following statements is correct? The branching pattern of the brachial plexus consists of three trunks branching into three divisions (anterior, middle, and posterior). All muscles in the upper limb are innervated by at least two cord segments of the brachial plexus. Muscles in the upper limb are innervated via a distal to proximal gradient through the brachial plexus. The branching pattern of the brachial plexus consists of five roots branching into lateral, posterior, and medial trunks. The branching pattern of the plexus consists of five divisions branching into five terminal nerves.

All muscles in the upper limb are innervated by at least two cord segments of the brachial plexus.

Which of the following is correct regarding the arterial blood supply to the upper limb? Arteries must pass on the flexor side of joints. The brachial artery becomes the axillary artery distally. The radial artery becomes the brachial artery distally. Arteries pass on the extensor side of joints. The radial artery can be found in the radial groove.

Arteries must pass on the flexor side of joints.

Choose the correct statement about connective tissue: Dense irregular connective tissue forms tendons of muscles Bone and cartilage are specialized connective tissues Both loose and dense irregular connective tissue contains collagen, but not elastic fibers Dense connective tissue directly underlies epithelial tissue Connective tissue can be distinguished from smooth muscle with a Hematoxylin & Eosin stain

Bone and cartilage are specialized connective tissues

Which of the following statements is correct? Distal muscles of the upper limb are innervated by nerves containing C5. Proximal muscles of the upper limb are innervated by nerves containing T1. Distal muscles of the upper limb are innervated by nerves containing C8. Distal muscles of the upper limb are innervated by nerves containing C6. Proximal muscles of the upper limb are innervated by nerves containing C8.

Distal muscles of the upper limb are innervated by nerves containing C8.

Which of the following statements concerning spinal nerves is correct? All of the neuron cell bodies of a ventral root are in a ventral root ganglion. Dorsal rami do not innervate skeletal muscle. All of the neuron cell bodies of the dorsal root are inside the spinal cord. Intercostal nerves are dorsal rami that innervate muscles on the dorsal thoracic wall Dorsal rami and ventral rami of the same spinal nerve innervate an individual dermatome and a myotome

Dorsal rami and ventral rami of the same spinal nerve innervate an individual dermatome and a myotome

When does patterning and initial outgrowth of the limbs occur in prenatal development? During the third week of development During the second week of development During weeks 4-8 of development During the last trimester of development During the first week of development

During weeks 4-8 of development

Choose the correct statement about epithelial tissue: Epithelium is one of four tissues that makes up an organ system Epithelium is avascular Epithelium functions as a nonselective barrier Epithelium covers only the internal surfaces of th body Epithelium sits inside of loose connective tissue

Epithelium is avascular

Which of the following is a correct statement? The distal radioulnar joint is a hinge joint. The proximal radioulnar joint is a hinge joint. The sternoclavicular joint is a hinge joint. The humeroulnar/radial joint is a hinge joint. The glenohumeral joint is a hinge joint.

The humeroulnar/radial joint is a hinge joint.

Which of the following statements is correct? The Brachial Plexus consists of the ventral rami from the C5 -C7 spinal nerves that intermingle at five different points. The Brachial Plexus consists of the ventral rami from the C5 -T1 spinal nerves that intermingle at three different points. The Brachial Plexus consists of the ventral rami from the C5 -C8 spinal nerves that intermingle at four different points. The Brachial Plexus consists of the ventral rami from the C5 -C6 spinal nerves that intermingle at two different points. The Brachial Plexus consists of the ventral rami from the C5 -T2 spinal nerves that intermingle at six different points.

The Brachial Plexus consists of the ventral rami from the C5 -T1 spinal nerves that intermingle at three different points.

Which of the following statements is correct? The Middle and Lower trunks of the brachial plexus are most common sites of an intra-plexus injury. The Upper and Lower trunks of the brachial plexus are most common sites of an intra-plexus injury. The Upper trunk of the brachial plexus is formed when C7 fibers join C8. The Middle trunks of the brachial plexus is formed when C5 fibers join C6. The Upper and Middle trunks of the brachial plexus are most common sites of an intra-plexus injury.

The Upper and Lower trunks of the brachial plexus are most common sites of an intra-plexus injury.

Which of the following is false regarding upper limb innervation? The brachial plexus is found between lower cervical vertebrae and the distal end of the armpit or axilla. The dermatome involving the thumb is supplied by C6. The upper limb undergoes a 90-degree rotation laterally during development. The dermatomes of the upper limb are innervated by cutaneous branches of ventral rami C5-T1. The dermatome involving the fifth digit is supplied by C6.

The dermatome involving the fifth digit is supplied by C6.

Choose the correct statement: The head is inferior to the neck. The leg is inferior to the knee. A wristwatch is worn on the arm. The abdomen is superior to the thorax. The forearm is superior to the arm.

The leg is inferior to the knee

Which of the following is correct? The brachial artery in the cubital fossa is the phlebotomists' venipuncture site. The median cubital vein in the axilla is the phlebotomists' venipuncture site. The median cubital vein in the cubital fossa is the phlebotomists' venipuncture site. The axillary vein in the cubital fossa is the phlebotomists' venipuncture site. The median cubital vein is a superficial vein in the axilla.

The median cubital vein in the cubital fossa is the phlebotomists' venipuncture site.

Which of the following is false regarding the course of the Brachial Plexus? The pectoralis major, which is part of the anterior wall of the axilla, covers the brachial plexus. The plexus, arising in the lateral neck, passes through an interval formed by the middle and posterior scalene muscles. The inferior part of the brachial plexus courses over upper lobe of the lung, crosses the first rib, and then enters the axilla. The plexus arises in the lateral neck by passing through an interval formed by the anterior and middle scalene muscles. Below the clavicle, the plexus courses through the axilla.

The plexus, arising in the lateral neck, passes through an interval formed by the middle and posterior scalene muscles.

Which of the following statements is correct? The three roots of the brachial plexus are the lateral, posterior, and medial cords arranged around the second part of the axillary artery. The three terminal nerves of the brachial plexus are the lateral, posterior, and medial cords arranged around the second part of the axillary artery. The three divisions of the brachial plexus are the lateral, posterior, and medial cords arranged around the second part of the axillary artery. The three cords of the brachial plexus are the lateral, posterior, and medial cords arranged around the second part of the axillary artery. The three trunks of the brachial plexus are the lateral, posterior, and medial cords arranged around the second part of the axillary artery.

The three cords of the brachial plexus are the lateral, posterior, and medial cords arranged around the second part of the axillary artery.