Exam 3 Flashcards by Mel Unknown

Which is a structural carbohydrate?

Cellulose

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Which of the following is false about metabolic reactions?

Entire protein synthesis reactions in a cell occurs only in the nucleus

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Which of the following factors about affecting depth of breathing is true?

Decreased pCO2 leads to hypercapnia and hyperventilation

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Identify the correct order of structures

Bronchi, Respiratory bronchioles, terminal bronchioles

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Bile is produced by the

LIver

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The function of type I alveolar cells is

Diffusion of gases

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The atmospheric pressure at sea level at 0 C is

760 mm Hg

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Normal alveolar ventilatory rate is equal to

4,200

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The major function of Krebs cycle is to produce

Produce reducing power

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Which is produced by the endocrine cells in stomach

Gastrin

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Failure of wound healing (scurvy) is caused by the defiency of vitamin

Vitamin C

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During expiration…

The lung volume decreases

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The volume of anatomical dead space is

150 mmHg

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The exchange of gases between capillaries and alveoli is influenced by all of the following except

Gastrointestinal peristalsis

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Which is false about the association and dissasosiaction of O2 with hemoglobin

Relation between amount of O2 bound to Hb and pO2 is linear

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Which of the following belongs to the respiratory system?

Alveoli

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During inspiration

Increases

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The intrapleural pressure is equal to

765 mmHg

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The conducting zone of respiratory system includes all of the following except

Respiratory bronchioles

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Structural changes that appear during branching of trachea include

None of the above

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Surfactants are produced by

Type II Cells

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The principal muscles of inspiration are

Only A and C ( diaphragm and external intercoastals)

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Contraction of which muscles is required for normal expiration

None of the above

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All of the following are true about pons and medullary centers of respiration except

Firing of VRG expiratory passively causes expiration by relaxation of diaphragm and external intercoastals

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The tidal volume for a normal adult human is

500 mL

The pCO2 and pO2 in the alveoli respectively are

104; 40 mmHg

WHich of the following causes inspiration

COntraction of diaphragm and external intercoastals

The greatest percentage of CO2 is transported in blood as

bicarbonate ions

Part of the air inspired with each breath necer reaches alveoli. This volume of air is the

Anatomical dead space

Prevention of over inflation of lungs through stretch receptors is called

Hering Breuer Reflex

Which value represents partial pressure off CO2 in the venous blood in mm Hg?

45 mm Hg

WHich of the following enhances appetite by stimulating neurons of lateral hypothalamic area (LHA)?

Neuropeptide Y

DIgestion of carbohydrates begins in

The mouth

Hydrochloric acid in stomach is produced by the

Parietal Cells

Pancreatic secretions include all of the following except

Pepsin

The cholecytokinin

Stimulates pancreatic secretion of enzyme solution

Regulation of pancreatic secretion involves

All of the above *Stimulation of duodenal mucosa by acidic chyme to secrete secretin. *Stimulation of duodenal mucosa by fats in the chyme to secrete cholecytoskinin * Secretin stimulates pancreas to secrete alkaline bicarbonate solution *Cholecystokinin stimulates pancreas to secrete enzyme solution

Which is true about bile?

Emulsifies fats

Which is absorbed in small intestine by active transport?

Na+

The hormone cholecystokinin and secretin are produced by endocrine cells in

The small intestine

Gastric secretions contain all of the following except

Secretin

Which is a monosaccharide?

Fructose

Which of the following affects carbohydrate metabolism?

thyroxine

Which is false about cells in stomach?

Chief of zymogenic cells produce trypsinogen that is later converted to trypsin by the hydrochloric acid

Which is FALSE about histology of small intestine?

Deep in crypts of Lieberkuhn are Paneth cells that produce antibacterial lyzozymes

Which is a polysaccharide?

Glycogen

Which value represents basal metabollic rate of a 70 Kg man?

66 kcal/ m2/ h

Which is NOT a part of the large intestine?

Ileum

Monomers of proteins are

Amino acids

Which is not associated with teeth?

Taste buds

Which is / are true about regulation of gastric secretion?

All of the above *Cephalic phase involves aroma , taste, sight and thought of food *Gastric phase involves both, neural and hormonal controls through stretch receptors. *Acetylcholine in the gastric phase stimulates production of gastric juices and gastrin *Intestinal phase involves production of enterogastrones

SKeletal muscles are found in

External anal sphincter

Stratified squamous epithelium is found in

The esophagus

The simple columnar epithelium is found in

The small intestine

At the end of electron transport chain, O2 is reduced to form

Water

Metabollic rate tends to be low in

Old age

WHich of the following yield the greatest caloric value / g ?

Fats

Which is correct about transport and behavior of respiratory gases?

An increase in temperature shifts the O2 dissociation curve to the right

Factors thought to be involved in regulating food intake include all of the following except?

Body temperature

All of the following are heat promoting mechanisms except

Vasodilation of cutaneous blood vessels

Which laryngeal cartilage is not paired?

Thyroid

What determines the direction of gas flow?

Partial Pressure gradient

O2 and CO2 are exchanged in lungs and tissues by

Diffusion

Which digestive juice is capable of digesting all four groups of food molecules including carbohydrates, proteins

Pancreatic

The formation of glucose from glycogen is

Glycogenolysis

WHich is not a function of the liver?

Synthesis of glucagon

Pseudostratified columnar epithelium with goblet cells is found in

Trachea

At constant temperature, the pressure of an enclosed gas varies inversely with its volume. This law describes

Boyles Law

Paneth cells are found in

The small intestine

Factors affecting use of amino acids include

All of the above

Name a structural protein in human body

Keratin,Collagen

Protein metabolism begins in

The stomach

Decreased blood concentration of H+ will cause increased or decreased alveolar ventilation

Decreased alveolar ventilation

An increase in temperature, PCO2, H+ or Biphosphoglycerate decreases hemoglobin affinity to oxygen and shifts the oxygen dissociation curve t9 the right or to the left.

by shifting it to the right

Simple columnar epithelium is found in

the lining of the digestive tract, which would include the stomach and intestines