1.2 Human anatomical systems and sensory organs Flashcards Preview

B01. Principles of toxicology and epidemiology > 1.2 Human anatomical systems and sensory organs > Flashcards

Flashcards in 1.2 Human anatomical systems and sensory organs Deck (9)
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1

The upper respiratory tract consists of

Mouth, nose and nasal cavity

Pharynx

Larynx

2

The lower respiratory tract consists of

Trachea

Bronchi

Bronchioles

Alveoli

Diaphragm

3

Most body organs are supplied by two separate sets of motor neurone nerves; one from the sympathetic system and one from the parasympathetic system. These neurones have opposite (or antagonistic) effects. In general the sympathetic
system

stimulates the ‘fight or flight’ responses to threatening situations

4

Most body organs are supplied by two separate sets of motor neurone nerves; one from the sympathetic system and one from the parasympathetic system. These neurones have opposite (or antagonistic) effects. In general the

parasympathetic system relaxes the body

5

The skin is the body's largest organ, covering the entire outside of the body and
weighing approximately 3 kilos. In addition to serving as a protective shield against
heat, light, injury, and infection, the skin also: 3

 regulates body temperature

 stores water, fat, and vitamin D

 can sense painful and pleasant stimulation.

6

The skin is made up of the following layers, with each layer performing specific
functions: 3

 Epidermis

 Dermis

 Subcutaneous (fat) layer.

7

The epidermis is the thin outer layer of the skin. The epidermis itself is made up of three sub-layers:

 Stratum corneum (horny layer)

 Keratinocytes

 Basal layer

8

The dermis is the middle layer of the skin. The dermis is made up of the following: 4

 Blood vessels

 Lymph vessels

 Hair follicles

 Sweat glands

9

Pneumoconiosis is

When dust particles of a certain size of some substances are inhaled the lungs are
unable to remove them. The particles become embedded in the lungs