BZT214 –

ANIMAL

PHYS

IOLO

GY

ON

L I NE

AS

SI G

NM

EN

T

AKMAL ARIF MOHD RAZALI116628

Assignment 4 and 5

When a healthy person, male, aged 20-30 years old wants to climb Mount Everest, there will be some changes in the circulatory and respiratory system.

• It is stressed, but will adapt. The circulatory system cannot work as efficiently, because there is less oxygen and CO2. After being at a high altitude for a long time, the body will adapt

• will produce more red blood cells so that it can pick up more oxygen, since less oxygen is carried by each hemoglobin at high altitudes.

• When respiration takes place, oxygen needs to be transported to all the body and for the deoxygenated blood to be cleaned. The heart cleans that blood as well as transport/delivers the oxygen and the cleaned blood called oxygenated blood

At the peak of the mountain, which has the highest altitude:

• Respiratory system = Faster, deeper breathing (a higher tidal volume in the lungs) because of an increased oxygen demand, and carbon dioxide must be expelled.

• Circulatory system = Heart beats faster because more oxygen is needed around the body (high altitudes = low oxygen levels), and carbon dioxide expelled.

At high altitude, a person could suffer from hypoxia. The early signs and symptoms of this disease are:

Signs of Hypoxia

Poor coordination

Rapid breathing

Poor judgment

Cyanosis ( the skin turns blue in color)

Lassitude/ Lethargy

Symptoms of Hypoxia

Hot and cold flashes

Muscle and mental fatigue

Headache

Air Hunger

Nausea

Dizziness

Euphoria

Tingling

Visual Impairment

MALE VS FEMALEFemales are better climbers because:

they weigh less therefore gravity has less of an effect than a 200 lb male. that and they have wider hip cavities allowing for a wider range of movement of the legs than a male.

Thank you