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WorksheetsRespiration Unit Exam
Total questions: 50
Worksheet time: 25mins
Respiration is the process of gas exchange between the atmosphere and body cells. There are 4 phases. The movement of air into the lungs is called
internal respiration
external respiration
ventilation
gasping
Which type of respiration occurs in the absence of oxygen?
Aerobic
Anaerobic
What are the two products of aerobic respiration?
Glucose & oxygen
Carbon dioxide & water
Lactic acid
Carbon monoxide
What is the first stage of aerobic respiration called?
Krebs Cycle (Citric acid cycle)
Calvin cycle
Glycolysis
ETC
Your exercise capacity is inherited from your _____________ since all the mitochondria in an individual's body are inherited from this parent. If this parent is a great endurance athlete, you will have the capacity to be one as well.
Mother
Father
A conclusion that can be drawn from reading "Mitochondria Functions and Training" is that
an increase in the intensity of training brings about the greatest adaptive response in the mitochondria
60-90 minutes of slow intensity training show greatest improvement of mitochondrial density
fast twitch and slow twitch muscle respond the same to the same exercise intenstity
mitochondrial numbers are not influenced by key hormones, such as thyroxine, produced by the thyroid gland.
Lactate Threshold is
the point at which the intensity of exercise is greater then that which can be supported by the available oxygen supply
an immediate transition from aerobic to anaerobic metabolism
independent of lactic acid accumulation
reached in 8-10 seconds
The Phoshpogen system
consists of small stores of high energy ATP and creatine phosphate (CP) in the muscle
is the primary energy system used in events taking 8-10 seconds
does not produce lactic acid
all of these
The lactate system utilizes
fat as fuel
creatine phosphate as fuel
water as fuel
glycogen as fuel
Lactic acid is formed
when exercise intensity is high
when the energy requirement is high
in fast contracting muscle fibers
all of these
Endurance training causes which of the following changes in red muscle fibers?
increases the size and the number of mitochondria
increases the amount of enzymes for aerobic respiration
increases the number of blood vessels
increases the amount of myoglobin
all of these
Lactate is recognized as a key substance to provide energy, produce glucose and liver glycogen and is the preferred fuel source of highly oxidative muscle fibers.
true
fasle
Blood lactate levels are only a measure of lactate accumulation, not lactate production. The faster lactate can be shuttled back to pyruvate and used as a fuel in the aerobic pathway, the less accumulation of lactate in the blood, the more work the athlete can do.
true
false
All 3 energy pathways are used in the human body simultaneously. The intensity of work determines which energy pathway dominates.
true
false
Respiration is the process of gas exchange between the atmosphere and body cells. There are 4 phases. Gas exchange between the air & blood is called
internal respiration
external respiration
ventilation
gasping
The correct pathway of air into the body is
alveoli → pharynx → trachea → nasal cavity → bronchi → bronchioles
bronchi → trachea → pharynx → nasal cavity → alveoli → bronchioles
nasal cavity → pharynx → trachea → bronchi → bronchioles → alveoli
nasal cavity → trachea → pharynx → alveoli → bronchioles → bronchi
Contraction of the external intercostal muscles causes which of the following to occur?
The diaphragm moves downward
The rib cage is compressed
The thoracic cavity volume decreases
The ribs and sternum move upward
The majority of the air we breathe is
oxygen gas
carbon dioxide gas
carbon monoxide gas
nitrogen gas
Breathing is an involuntary act controlled by the respiratory centers of the brain called
cerebrum
hypothalamus
cerebellum
lower medulla oblongata & pons
Respiratory centers of the brain control respiration by sensing levels of
oxygen
carbon dioxide
carbon monoxide
adrenaline
The partial pressure of carbon dioxide is 45 mm Hg in the blood & 40 mm Hg in the alveoli. What happens to the carbon dioxide?
It diffuses into the blood
It diffuses into the alveoli
The gradient is too small for carbon dioxide to diffuse
It decomposes into carbon and oxygen
The normal breathing rate per minute at rest is approximately _____ breaths in adults.
10 – 12
12 – 15
15 – 25
25 – 30
The epiglottis is a flap-like structure that stands upright, allowing air to enter the larynx . During swallowing, it presses downward & prevents food from entering the
stomach
esophagus
trachea
pharynx
This condition is caused by oxygen deficiency and can be caused by inadequate blood flow, poisons / toxins (like CO)
apnea
hypoxia
anemia
cystic fibrosis
Cigarette smoking causes
decrease in airway conduction of approximately 50% on average
a reduction in oxygen-carrying capacity of the blood
lung disease by damaging your airways and the alveoli
all of the above
A condition in which the smooth muscle lining the airway constrict, reducing the size of the airways, cutting down on the flow of air and is accompanied by symptoms of wheezing, shortness of breath and coughing, is
asthma
pneumothorax
pleural thickening
apnea
A condition in which airways become inflamed and narrower, often due to viral infection, which restricts the flow of air and increases the work of the respiratory muscles is
asthma
bronchitis
emphysema
apnea
A condition in which the pleural cavity becomes filled with air that has entered through an opening in the chest is called
hemothorax
pneumothorax
thoracadorsalitis
traumatic asphyxia
The device used to measure lung capacity is called a
stethoscope
lung – o – meter
spirometer
sphygmomanometer
Which of the following prevents the alveoli from collapsing?
residual volume
tidal volume
expiratory reserve volume
inspiratory reserve volume
This hormone raises blood glucose levels, converting stored glycogen to glucose.
erythropoietin (EPO)
glucagon
insulin
carbonic anhydrase
Which of the following represents the correct order of stored energy utilization?
Fat → Protein → Starch / Glucose
Protein → Starch / Glucose → Fat
Starch / Glucose → Protein → Fat
Starch / Glucose → Fat → Protein
Endurance performance is determined by the athlete’s ability to
be willing to withstand pain and discomfort associated with prolonged exercise
consume oxygen in muscle cells
to have inherited, in large quantity, type I (slow twitch) muscle fibers
have a large vital capacity
all of the above
The maximum amount of oxygen (mL) used in one minute per Kg of body weight is
CO2max
VO2max
O2max
NO2max
During graded maximal exercise, the point at which blood lactate concentration starts to accumulate (rise above resting values) is known as (choose all that apply)
(RER) CO2 / O2 exchange ratio of 0.0
(RER) CO2 / O2 exchange ratio of 1.0
lactate threshold
aerobic threshold
This protein is responsible for carrying most O2 throughout the body in the blood.
hemoglobin
iron
myoglobin
myosin
The volume of air that is normally exhaled after a normal inhalation at rest is known as
tidal volume (TV)
expiratory reserve volume (ERV)
vital capacity (VC)
reserve volume (RV)
The volume of air that can be maximally exhaled after a maximal inhalation is known as
tidal volume (TV)
expiratory reserve volume (ERV)
vital capacity (VC)
residual volume (RV)
Which of the following activities uses mainly the lactic acid fermentation pathway?
Short Sprints (100-200 M)
Intermediate Sprint (400-800M)
One Mile run
10K (6.2 Miles)
Marathon (26.2 Miles)
