west coast emt block quiz 4

The systemic veins function by:

a. delivering deoxygenated blood to the capillaries

b. delivering oxygen-poor blood to the capillaries

c. returning oxygen-rich blood back to the left atrium

d. returning deoxygenated blood back to the heart

d. returning deoxygenated blood back to the heart

The body's natural protective mechanisms against heat loss are:

a. respiration and vasoconstriction

b. vasodilation and respiration

c. vasoconstriction and shivering

d. shivering and vasodilation

c. vasoconstriction and shivering

In contrast to the brown recluse spider, the black widow spider:

a. is very small and has a violin-shaped marking on its back

b. has a bite that usually produces local pain but no systemic signs or symptoms

c. is large and has a red-orange hourglass mark on its abdomen

d. has a bite that is typically painless until a blister develops

c. is large and has a red-orange hourglass mark on its abdomen

A laceration:

a. is a jagged cut caused by a sharp object or blunt force trauma

b. rarely penetrates through the subcutaneous tissue to the muscle

c. is a sharp, smooth cut that is made by a surgical scalpel

d. is an injury that separates various layers of soft tissue

a. is a jagged cut caused by a sharp object or blunt force trauma

Which of the following is of LEAST importance when initially assessing the severity of a burn?

a. known drug allergies

b. area(s) burned

c. past medical history

d. age of the patient

a. known drug allergies

What layer of the skin forms a watertight, protective seal for the body?

a. muscular layer

b. epidermis

c. dermis

d. subcutaneous layer

b. epidermis

Which of the following body systems or components is the LEAST critical for supplying and maintaining adequate blood flow to the body?

a. adequate blood in the vasculature

b. an effectively pumping heart

c. the filtering of blood cells in the spleen

d. an intact system of blood vessels

c. the filtering of blood cells in the spleen

The hormone responsible for the actions of the sympathetic nervous system is:

a. insulin

b. aldosterone

c. thyroxine

d. epinephrine

d. epinephrine

Pleural fluid is contained between the:

a. parietal pleura and the heart

b. visceral and parietal pleurae

c. parietal pleura and the chest wall

d. visceral pleura and the lung

b. visceral and parietal pleurae

The MOST common and serious complication of a significant head injury is:

a. a hypoxic seizure

b. acute hypotension

c. cerebral edema

d. a skull fracture

c. cerebral edema

Compared to adults, infants and children are at higher risk for hypothermia for all of the following reasons, EXCEPT:

a. a smaller amount of body fat

b. a smaller overall muscle mass

c. a relatively small surface area

d. a decreased ability to shiver

d. a decreased ability to shiver

Bone marrow produces:

a. blood cells

b. lymphocytes

c. cartilage

d. electrolytes

a. blood cells

Bones are connected to other bones by bands of tough fibrous tissues called:

a. ligaments

b. bursa

c. tendons

d. cartilage

a. ligaments

The spinal cord is encased in and protected by the:

a. intervertebral disc

b. vertebral body

c. vertebral arch

d. spinal cord

d. spinal cord

What type of muscle contracts and relaxes to control the movement of the contents within its structures?

a. smooth

b. striated

c. cardiac

d. skeletal

a. smooth

In which of the following situations would he EMT be the LEAST likely to immobilize a patient's spine?

a. no distancing injuries or evidence of intoxication

b. pain to the c-spine, but no numbness or tingling

c. no spinal pain, but tingling in the extremities

d. unresponsive, but moving all extremities equally

a. no distancing injuries or evidence of intoxication

The optic nerve endings are located within the:

a. retina

b. cornea

c. sclera

d. pupil

a. retina

A driver involved in a rollover motor vehicle crash will MOST likely experience serious injuries or death if he or she:

a. remains within the vehicle

b. is ejected or partially ejected

c. experiences multiple impacts

d. is wearing only a lap belt

b. is ejected or partially ejected

An air embolism with diving occurs when:

a. the diver hyperventilates prior to entering the water

b. the alveoli completely collapse due to high pressure

c. the diver holds his or her breath during rapid ascent

d. high water pressure forces air into the mediastinum

c. the diver holds his or her breath during rapid ascent

In moving joints, the end of the bones are covered with:

a. synovial tendons

b. articular cartilage

c. gliding cartilage

d. muscular fascia

b. articular cartilage