anatomy of 7 systems

Question 1

What are the levels of organisation of the human body and describe them

Answer 1

Cellular level - the basic unit of all living things except viruses
Tissue level - A group of similar cells working together to perform one or more specific functions
Organ level - two or more tissues working in combination to perform specific tasks
Organ system level - organs interact in organ systems

Question 2

Epithelial tissue

Answer 2

• Covers the surface of the body
• Found in the outer layer of skin, lining of body cavities, blood and lymph vessels
• Some are specialized for secretion
• Protect the exposed and internal surfaces from abrasion, dehydration, and destruction by chemical or biological agents
• Can proliferate to produce new cells when cells become damaged

Question 3

Origin of epithelial tissue

Answer 3

Develop from all 3 of the embryonic germ layers

• Embryonic ectoderms give rise to the epidermis
• Embryonic mesoderm gives rise to the lining of the heart and blood vessels as well as some of the body organs
• Embryonic endoderm gives rise to the lining of the respiratory tract and gastrointestinal tract

Question 4

Connective tissue

Answer 4

• Connects all of the epithelial tissue to the rest of the body
• Most widely distributed tissue type
• Highly vascular and contain sensory receptors
• Develop from embryonic mesoderm

Question 5

Specific functions of connective tissue

Answer 5

• Transporting fluid and dissolved material
• Protect delicate organs
• Defend the body against invading microorganisms

Question 6

1) Where does nervous tissue develop
2) What is it specialized for
3) What percentage of nervous tissue is concentrated in the brain and spinal cord

Answer 6

1) embryonic ectoderm
2) conductive of electrical impulses from one region of body to another
3) 98%

Question 7

What are the four regions in regional anatomy

Answer 7

• Thorax
• Abdomen and Pelvis
• Head and neck
• Limbs

Question 8

What is the thorax

Answer 8

• region between neck and abdomen
• separated from the abdomen by the diaphragm
• bony thoracic cage
• Thoracic cavity

Question 9

How are the limbs attached to trunk

Answer 9

• Upper limbs attached to trunk via pectoral girdle

- Lower limb attached to trunk via pelvic girdle