Anatomy Quiz 1
The spinal cord has:
A core of gray matter surrounded by white matter
The intermediate radioulnar joint exists between the radius and the ulna. The two bones are joined together by a high-collagen sheet of dense connective tissue. This joint allows slight movements and flexibility between the two bones. What specific type of joint is this?
A fibrous syndesmotic joint
Which of the following combinations indicates the correct distribution of spinal nerve pairs?
8 cervical - 12 thoracic - 5 lumbar - 5 sacral - 1 coccygeal
Which of the following correctly pairs the term with its definition?
Abduction - lifting the arm out to the side so it is parallel to the ground
Which of the following is found in the posterior group of forearm muscles?
Abductor pollicis longus
Raising your arm to shoulder level is accomplished almost entirely by the
Deltoid
The branch of a spinal nerve that innervates deep muscles on the dorsal thorax is the
Dorsal ramus
The sensory root of a spinal nerve is also referred to as
Dorsal root
The thickest of the meninges is the
Dura mater
The ventral root of a spinal nerve contains
Only motor fibers
A muscle end attached to a less movable or relatively fixed part is called the
Origin
Which of the following muscles of the chest has its insertion on the humerus?
Pectoralis major
The central nervous system (CNS) consists of
The brain and spinal cord
Classifying joints as synarthrotic, amphiarthrotic, or diarthrotic represents
The degree of movement possible at the joint
Which of the following veins is a superficial vein? Ulnar, basilic, subclavian, radial, or brachial?
basilic
Supination of the forearm and hand is accomplished by the
biceps brachii and supinator.
Blood flow into the deep and superficial palmar arches originates from the ____ and _____
radial; ulnar
Types of fibrous joints
syndesmosis, suture, and gomphosis joints.
The rotator cuff muscles
hold the head of the humerus in the glenoid fossa of the scapula.
The conus medullaris
is a tapered, cone like region immediately inferior to the lumbar enlargement
The nervous system
Controls the movement of muscles
A tendon is ____ whereas an aponeurosis is _______.
Cordlike and connects muscles to bones; a broad sheet of dense CT that connects muscles to muscles
A muscle the extends both the wrist and the index finger is the...
Extensor indicis
Organize the following parts of a muscle from smallest to largest: muscle fiber, fascicle, myofibril, filament, muscle.
Filament, myofibril, muscle fiber, fascicle, muscle
What structure anchors the thecal sac and conus medullaris to the coccyx?
Filum terminale
The act of closing the fingers to make a fist is an example of what type of joint movement (at the interphalangeal joints)?
Flexion
The teres major and teres minor are not involved in
Flexion and abduction of forearm
Movements permitted by the elbow joint between the humerus and ulnar are:
Flexion and extension
A tooth root attached to a jawbone by a periodontal ligament is a____
Gomphosis
Cartilaginous joints are connected by:
Hyaline cartilage or fibrocartilage
Cartilaginous joints are connected by?
Hyaline cartilage or fibrocartilage
The muscle that opposes a particular action is called the____
Antagonist
When someone taps you on your shoulder, they stimulate the _____ nerve:
Axillary
Which of the following veins is a superficial vein:
Basilic vein
Suppose all synarthrotic joints were fused in an individual. Which of the following would be true of this individual?
Braces would not work to straighten the person's teeth because the teeth would not move.
Spinal nerves C5-T1 make up the _____ plexus
Brachial
Tracing the blood from the heart to the right hand, blood leaves the heart, passes through the ascending aorta, aortic arch, right subclavian artery, axillary and brachial arteries, either the radial or ulnar arteries and palmar arches to arrive at the hand. Which artery is missing in this sequence?
Brachiocephalic
Fluid-filled sacs containing synovial fluid are called
Bursae
What is found in the dorsal root ganglion?
Cell bodies of pseudo-unipolar sensory neurons
A vein responsible for draining blood from the upper limb is the
Cephalic
The superficial vessels typically seen in the hand and forearm are tributaries of the ________ and ________ veins.
Cephalic; basilic
Suppose the pubic symphysis did not exist in the pelvic girdle and the two pubic bones were fused in the middle. Which of the following best describes the way the region would be affected if this joint was removed?
Childbirth would have a high mortality risk because the pelvic girdle would be rigid and unmoving.
The anconeus works with the triceps brachii
Extend the forearm
Which of the following muscles is part of the rotator cuff?
Infraspinatus
A joint capsule is reinforced by
Ligaments binding articular ends of bones together.
The spinal cord
Links the peripheral nervous system to the brain
Which of the following veins is NOT involved in draining blood from the brachium?
Median Cubital Vein
Which vessel is often used to draw blood from the patient?
Median cubital vein
An injury to the wrist that results in edema in the carpal tunnel would compress the
Median nerve
Most of the neurons in the brain and spinal cord are:
Multipolar
The brachial plexus supplies nerves that function to contract which of the following?
Muscles of the arm and forearm
Using the biceps brachii to flex the forearm requires innervation of the ___ nerve.
Musculocutaneous
Which muscle retracts, rotates, and fixes the scapula?
Rhomboideus major
Dendrites on unipolar neurons are parts of:
Sensory neurons
The coracohumeral ligament is associated with the
Shoulder joint
The somatic nervous system consists of nerve fibers that connect the CNS to the ___, whereas the autonomic nervous system consists of fibers that connect the ____.
Skin and skeletal muscles; CNS to the visceral organs
Activities such as distance swimming and distance running will most likely stimulate development of:
Slow fatigue-resistant fibers
During a spinal tap, CSF is obtained from which of the following locations?
Subarachnoid space
The three major arteries of the upper limb that form a continuum are the
Subclavian, axillary, and brachial arteries
Which muscle fixes the clavicle or elevates the first rib?
Subclavius
Of the following muscles of the forearm, which one rotates the forearm to turn the palm upwards?
Supinator
Which of the following is not a synovial joint?
Symphysis
A muscle that assists the agonist is a(n)
Synergist
The extensor pollicis brevis moves the
Thumb
As a person is vigorously rowing a boat, they suddenly experience extreme pain in their upper arm and no longer can extend at the elbow joint. Which of the following is probably the injured muscle?
Triceps brachii
If a man exercises by doing push-ups every day, he would strengthen or enlarge which of the following muscles?
Triceps brachii
Which of the following muscles extends the forearm and has its insertion on the ulna?
Triceps brachii
When a person hits their funny bone, they cause temporary damage to the _____ nerve.
Ulnar
In a subdural hematoma resulting from a blow to the head, blood accumulates between the
dura mater and arachnoid mater
Three general functions of the nervous system are
integrative, motor, and sensory.
The arm is attached to the thorax by the
latissimus dorsi and pectoralis major.
If the synovial membrane could not secrete synovial fluid,
the cartilage contained within the capsule would not receive nutrients from synovial membrane blood vessels.