SHS Anatomy & Physiology Fundamentals 2

Question 1

Which layer of the skin serves as the primary barrier against chemical exposure in occupational settings?

Accepted Answer

Epidermis

Answer

The epidermis is the outermost layer of skin and acts as the first line of defense against chemicals, pathogens, and physical hazards.

Question 2

A worker's blood pH drops to 7.28 after prolonged exposure to CO2. Which condition does this describe?

Accepted Answer

Respiratory acidosis

Answer

Elevated CO2 from hypoventilation or exposure causes respiratory acidosis, lowering blood pH below the normal range of 7.35–7.45.

Question 3

Which type of muscle tissue is found in the walls of blood vessels and is controlled involuntarily?

Accepted Answer

Smooth muscle

Answer

Smooth muscle lines blood vessels, the digestive tract, and airways, and is regulated by the autonomic nervous system without conscious control.

Question 4

In the context of occupational health, the glomerular filtration rate (GFR) is important because it measures:

Accepted Answer

The kidney's ability to filter toxins from blood

Answer

GFR quantifies how much blood the kidneys filter per minute, making it a key indicator of renal function when assessing nephrotoxic chemical exposure.

Question 5

Which division of the autonomic nervous system triggers the 'fight-or-flight' response during a workplace emergency?

Accepted Answer

Sympathetic division

Answer

The sympathetic division releases epinephrine and norepinephrine, increasing heart rate and redirecting blood flow to muscles during acute stress.

(SHS) Safety and Health Specialist Certificate Practice Test

(SHS) Safety and Health Specialist Certificate Practice Test

SHS Anatomy & Physiology Fundamentals 2