Organ systems

An organ system is a group of organs classified as a unit because of a common function or set of functions. The classification of organ systems is somewhat arbitrary. For example, the muscular and skeletal systems can be combined as the musculoskeletal system, or the nervous system can be subdivided into the peripheral and central nervous systems.

The human organism is divided into the following major organ systems: the integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive systems.

The integumentary system consists of skin, hair, nails, and sweat glands. This system protects, regulates temperature, and prevents water loss.

The skeletal system includes bones, ligaments, cartilages, and joints. It protects internal organs, supports, and allows body movement, produces blood cells, and stores minerals.

The muscular system consists of muscles attached to the skeleton. This system allows body movement, maintains posture, and produces body heat.

The nervous system includes brain, spinal cord, nerves, and sensory receptors. It is a complex information system. It receives, processes and communicates information.

The endocrine system consists of endocrine glands. This system participates in the regulation of metabolism, reproduction, and controlling a large number of activities.

The cardiovascular system includes heart, blood vessels, and blood, which is pumped through the blood vessels by the heart. It transports nutrients, waste products, gases, and hormones throughout the body; plays a role in the regulation of body temperature.

The lymphatic system consists of lymph vessels, lymph nodes, and other lymph organs. This system removes foreign substances from the blood and lymph, maintains tissue fluid balance, and absorbs fats.

The respiratory system includes lungs and respiratory passages. It exchanges gases (oxygen and carbon dioxide) between the blood and the air and regulates blood pH.

The digestive system consists of mouth, esophagus, stomach, intestines, and accessory structures. This system performs the mechanical and chemical processes of digestion, absorption of nutrients, and elimination of wastes.

The urinary system includes kidneys, urinary bladder, and ducts that carry urine. It removes waste products from the circulatory system; regulates blood pH, ion balance, and water balance.

The reproductive system consists of gonads, accessory structures, and genitals of males and females. This system performs the processes of reproduction and controls sexual functions.

Ex. 6. Translate the following words and word-combinations into English:

Додатковий, допоміжний; покривний; нервовий; серцево-судинний; дихальний; травний; м’язовий; скелетний; сечовий; потовий; шкіра; запобігати втраті води; головний; кістка; суглоб; хрящ; зв’язка; розумовий; ендокринний; підтримувати поставу; мозок; чутливий рецептор; спинний мозок; брати участь; поживна речовина; серце; кров’яні судини; нагнітати; гормон; боротися; стороння речовина; нирки; сечовий міхур; протока; кисень; вуглекислий газ; видалення.

Ex. 7. Translate text "Organ Systems" into Ukrainian.

Ex. 8. Describe the systems of the body using the data of the following table:

MODEL :

The _system consists of / includes _ (major components).

This system _ (functions).

	SYSTEM		MAJOR COMPONENTS	FUNCTIONS
	Integumentary system		Skin, hair, nails, and sweat glands	Protects, regulates temperature, prevents water loss
	Skeletal system
ribs   pelvis     tibia   fibula		skull clavicle   sternum humerus vertebral column radius ulna   femur	Bones, associated cartilages, and joints	Protects, supports, and allows body movement, produces blood cells, and stores minerals
	Muscular system
temporalis masseter   sternocleidomastoid		pectoralis major   biceps   rectus abdominus   sartorius   quadriceps   gastrocnemus	Muscles attached to the skeleton	Allows body movement, maintains posture, and produces body heat
	Nervous system	brain   spinal cord	Brain, spinal cord, nerves, and sensory receptors	Detects sensation, controls movements, controls physiological and intellectual functions
	Endocrine system
parathyroids (behind thyroid)		pituitary thyroid thymus adrenals   pancreas ovaries (in females) testis (in males)	Endocrine glands such as the pi­tuitary, thyroid, and adrenal glands	Participates in the regulation of metabolism, reproduction, and many other functions
	Cardiovascular system
carotid artery jugular vein   brachial artery		superior vena cava pulmonary artery   heart aorta inferior vena cava     femoral artery and vein	Heart, blood vessels, and blood	Transports nutrients, waste products, gases, and hormones throughout the body; plays a role in the immune response and the regulation of body temperature
	Lymphatic system
right lymphatic duct     thoracic duct		thymus gland   spleen     lymph node	Lymph vessels, lymph nodes, and other lymph organs	Removes foreign substances from the blood and lymph, combats disease, maintains tissue fluid balance, and absorbs fats
	Respiratory system
pharynx trachea		nasal cavity oral cavity larynx bronchus lungs	Lungs and respiratory passages	Exchanges gases (oxygen and carbon dioxide) between the blood and the air and regulates blood pH
	Digestive system
pharynx     gallbladder   large intestine   rectum		salivary gland   esophagus   liver stomach small intestine	Mouth, esophagus, stomach, in­testines, and accessory struc­tures	Performs the mechanical and chemical pro­cesses of digestion, absorption of nutrients, and elimination of wastes
	Urinary system
urethra		kidney ureter   bladder	Kidneys, urinary bladder, and ducts that carry urine	Removes waste products from the circulatory system; regulates blood pH, ion balance, and water balance
	Reproductive system
ductus deferens   epididymis		seminal vesicle prostate gland testis penis uterine tube ovary uterus vagina	Gonads, accessory structures, and genitals of males and fe­males	Performs the processes of reproduction and controls sexual functions and behaviors

Ex. 9. Answer the following questions:

1. What systems does the human body consist of? 2. What are the major components of the integumentary system? 3. What are the major components of the skeletal system? 4. What does the muscular system consist of? 5. What are the major components of the nervous system? 6. What does the endocrine system consist of? 7. What are the major components of the cardiovascular system? 8. What does the lymphatic system consist of? 9. What are the major components of the respiratory system? 10. What are the major components of the digestive system? 11. What are the major components of the urinary system? 12. What does the reproductive system consist of? 13. What is the function of the integumentary system? 14. What is the function of the skeletal-muscular system? 15. What is the function of the cardiovascular system? 16. What is the function of the reproductive system? 17. What is the function of the digestive system? 18. What is the function of the endocrine system? 19. What is the function of the urinary system? 20. What is the function of the reproductive system?

Ex. 10. Insert the missing words:

1. The body is divided into 11 major organ systems: integumentary, _, muscular, nervous, endocrine, _, lymphatic, respiratory, _, urinary, and reproductive systems. 2. The skeletal system includes bones, associated _, and joints. 3. It protects, _, and allows body movement. 4. The muscular system consists of _. 5. This system allows body _. 6. The cardiovascular system includes heart, blood _, and blood. 7. It transports _.

Ex. 11. Make up the sentences using the following words and word-combinations:

1. The nervous system / brain / and / includes / spinal cord /nerves. 2. It / physiological / intellectual functions / controls / and. 3. Includes / respiratory passages / the respiratory system / lungs / and. 4. Between / it / exchanges / the blood / gases / and / the air. 5. Intestines / the digestive / mouth / system / consists of / esophagus / and / stomach. 6. Chemical / this / system / digestion / the mechanical / and / performs / processes / of.

Ex. 12. Write out key sentences of the text "Organ Systems".

Ex. 13. Compose the plan to the text "Organ Systems".

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Дата добавления: 2015-07-11