The digestive system, the urinary system & the skin

1. Which of the following statements about the skin is NOT true?

It protects underlying structures from injury and infection

It helps to regulate body temperature

It contains sensory nerve endings of pain, touch and temperature

It is non-continuous as its membranes do not line all of the body's orifices

The skin does line all of the body's orifices and is therefore referred to as continuous.

Explanation

The skin does line all of the body's orifices and is therefore referred to as continuous.

2. The molar and premolar teeth are used for cutting and biting food, whereas the canines and incisors are used for grinding and chewing food.

True

False

The opposite of this is true.

Explanation

The opposite of this is true.

3. Which of the following statements is NOT true of the digestive system?

Food passes through the pharynx, the larynx and the oesophagus

The ailimentary canal is also referred to as the gastrointestinal tract

The tongue is a part of the digestive system and is attached to its base by the hyoid bone

Accessory organs are those whose secretions pass through ducts into the ailimentary canal

Food does not pass through the larynx, which is used for generating sound, regulating temperature, providing a passageway for air and protecting the lower respiratory tract.

Explanation

Food does not pass through the larynx, which is used for generating sound, regulating temperature, providing a passageway for air and protecting the lower respiratory tract.

4. Match the following statements to either epidermis or dermis. A - the outside layer of skin B - the layer of skin underneath the surface C - elastic and tough and formed from connective tissue D - directly above the subcutaneous tissue, which it touches E - its maintainence depends on the shedding and division of cells

Epidermis - B, C & E ...... Dermis - A & D

The epidermis is the outside layer of the skin, which is represented by statement A. It is also mentioned that its maintenance depends on the shedding and division of cells, which is represented by statement E. On the other hand, the dermis is the layer of skin underneath the surface, represented by statement B. It is described as elastic and tough, formed from connective tissue, which is represented by statement C. Lastly, the dermis is directly above the subcutaneous tissue, which it touches, represented by statement D.

Explanation

The epidermis is the outside layer of the skin, which is represented by statement A. It is also mentioned that its maintenance depends on the shedding and division of cells, which is represented by statement E. On the other hand, the dermis is the layer of skin underneath the surface, represented by statement B. It is described as elastic and tough, formed from connective tissue, which is represented by statement C. Lastly, the dermis is directly above the subcutaneous tissue, which it touches, represented by statement D.

5. Which of these statements about the urinary system are true?

It is the main excretory system in the body

It includes two kidneys, which lie on the anterior abdominal wall, one each side of the vetebral column

The urinary system also includes a ureter which transports urine to the bladder

The kidneys help to control body water levels, create red blood cells and control blood pressure

The kidneys lie on the POSTERIOR (not anterior) abdominal wall, and urine from the kidneys is transported by TWO ureters to the bladder.

The kidneys secrete urine to control water levels, produce enthropoeitin to help create red blood cells and secrete renin, an enzyme which controls blood pressure.

Explanation

The kidneys lie on the POSTERIOR (not anterior) abdominal wall, and urine from the kidneys is transported by TWO ureters to the bladder.

The kidneys secrete urine to control water levels, produce enthropoeitin to help create red blood cells and secrete renin, an enzyme which controls blood pressure.

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The Digestive System, The Urinary System & The Skin