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