A&P Test 2
Which is not a function of cerebrospinal fluid?
CSF helps to promote mitosis within neuronal tissue
Which is not a characteristic of a male pelvis?
Coccyx tilted posteriorly
With increased age, skeletal muscles show
a decrease in the number of myofibrils
Which of the myofilaments of a muscle fiber has the active sites to which the heads of the thick filaments will bind?
actin
Which are possible functions of skeletal muscles?
all of the above
A term that could be used to describe the changes that occur in muscle fiber as humans age would be
atrophy
What is the function of the nuchal lines?
attachment for muscles and ligaments
Which is the correct order for the vertebral regions, from superior to inferior?
cervical, thoracic, lumbar, sacral, coccygeal
There are two types of synapses, based on mode of communication. What are they
chemical and electrical
Which bone is not part of the axial skeleton?
clavicle
Which feature is unique to the axis?
dens
The muscles that form a partition between the thoracic and abdominal cavities is/are the
diaphragm
When a muscle is isometrically contracted, its length _____ change
does not
Which is the correct order of the connective tissue layers of a skeletal muscle, beginning with the most superficial?
endomysium, epimysium, perymsium
Skeletal muscles are the only locations where muscle tissue is found
false
Pennate muscle fibers resemble a
feather
The primary motor cortex is part of the
frontal lobe
The muscles that make up the calf of the leg is the
gastrocemius
The head of the humerus articular with the
glenoid cavity
One of the largest muscles in the body and the one most responsible for extending and laterally rotating the thigh is the
gluteus maximus
The inner, gelatinous region of each intervertebral disc is called the
nucleus pulposus
Human intelligence is most closely related to the
number of active synapses
The portion of the brain involved primarily with vision is the
occipital lobe
The primary somatosensory cortex is part of the
parietal lobe
The type of fibers specialized to contracting for extended periods of time as would be required in running a marathon, for example, are _____ fibers.
slow
If you were to remove the gastrocnemius muscle you would expose the
soleus
The neurons that stimulate a muscle contraction are called _____ neurons
somatic motor
The portion of the nervous system that has voluntary control over skeletal muscles is the _____________ division.
somatic motor
The portion of the nervous system that conducts impulses from the skin, joints, skeletal muscles, and special senses is the ___________ division.
somatic sensory
The vertebral processes that are most easily palpated along the midline of the back are the _____ processes.
spinous
The bony projections that can be palpated medially and laterally at the wrist are the
styloid processes
All of these muscles, except one, adduct the arm. Select the exception
supraspinatus
Which muscle is the one most commonly damaged in a rotator cuff injury?
supraspinatus
The structure responsible for attaching muscle to bone is a
tendon
The horizontally oriented fold of dura mater that separates the occipital and temporal lobes of the cerebrum from the cerebellum is the
tentorium cerebelli
The primary dorsiflexors of the foot at the ankle is the
tibialis anterior
Which is not a function of the motor division of the nervous system?
transmits impulses from the viscera
Which is not a general function of the nervous system?
transporting material throughout the body
In an isotonic contraction, the tension produced exceeds the resistance and muscle fibers will shorten
true
The primary function of the abdominal muscles is not to flex the spine, but to hold the abdominal organs in place
true
The tension produced by a muscle fiber is directly proportional to the number of sarcomeres it contains
true
Which elevate(s) the ribs?
two of the above
Which is a function of the brain's frontal lobe?
verbal communication
If you contract your right sternocleidomastoid muscle, what movement would you expect?
your head would turn to the left
The overall recovery rate for idiopathic facial nerve paralysis (bell palsy) averages about _____ percent, and does not appear to be related to its treatment
50
The vertebral column includes ___ cervical, ___ thoracic, and ___ lumbar vertebrae.
7;12;5
The skull consists of _____ cranial bones and ______ facial bones
8; 14
What is the correct order of cranial meninges, from superficial to deep?
Dura mater, arachnoid mater, pia mater
When you ret your hands on your hips, just below the waist, you are resin them on the
iliac crests
Which muscles depress the ribs
internal intercostals
There are three anterior thoracic muscles. select the exception
levator scapulae
The prominence felt on the medial surface of the ankle is the
medial malleolus
Which is a correct listing of the hierarchy of a skeletal muscle's components, beginning with the smallest?
muscle fibers, fascicle, myofibirls, skeletal muscle
Which protein makes up the thick filament?
myosin
Which is not a function of the vertebral column?
passageway for cranial nerves
The function of a retinaculum is to
prevent the tendons from bulging outwards
Which is not one of the hamstring muscles?
rectus femoris
Which bone does not belong to the appendicular skeleton?
sacrum
The afferent division of the nervous system is also known as the _____ division
sensory
The _____ is a large, saw-toothed, flat, fan-shaped muscle positioned between the ribs and the scapula
serratus anterior