Lecture 1 Body Systems & Major Organs Flashcards
List the levels of organisation
- Chemical level
- Cellular level
- Tissue level
- Organ level
- System level
- Organismal level
List the 11 body systems
- Integument
- Skeletal
- Muscular
- Cardiovascular
- Lymphatic and immune
- Endocrine
- Nervous
- Respiratory
- Digestive
- Urinary
- Reproductive
Components of integumentary system (5)
- Skin
- Hair
- Nails
- Sweat glands
- Oil glands
Functions of the Integumentary system (5)
- Protection
- Temperature regulation
- Waste elimination
- Production of active vitamin D
- Detects sensations- hot, cold, touch, pain
Components of skeletal system (3)
- Bones
- Joints
- Cartilage
Functions of skeletal system (4)
- Support and protection
- Muscle attachments
- Houses cells that produce blood cells
- Stores minerals and lipids
Components of muscular system
Skeletal muscle
Functions of the muscular system (3)
- Enables movement
- Stabilises body position(posture)
- Generates heat
Components of cardiovascular system (3)
- Blood
- Heart
- Blood vessels
Functions of cardiovascular system (5)
- Transport of substances - gases, nutrients, waste, hormones
- Temperature regulation
- Water content regulation
- Defence against disease
- Repair of tissues
Components of lymphatic and immune system (3)
- Lymphatic fluid
- Lymphatic vessels and lymph nodes
- Bone marrow, spleen, thymus, tonsils
Functions of the lymphatic & immune system (3)
- Returns proteins and fluid to blood
- Carries lipids from GI tract to blood
- Protects against disease and cancer
Components of endocrine system
Hormone-producing glands
Examples include:
Hypothalamus
Pituitary
Thymus
Thyroid glands
Adrenal glands
Pancreas
Ovaries
Testes
Functions of the endocrine system (2)
- Co-ordinates body functions
- Releases hormones from glands to have effect on target organs
Components of nervous system (4)
- Brain
- Spinal cord
- Nerves
- Special sense organs e.g. eyes, ears
Functions of nervous system (3)
- Generate nerve impulses to regulate body activities
- Detect stimuli & responds to them
- Initiates muscles contraction or gland secretion
Components of respiratory system (7)
- Lungs & air passages
- Pharynx, larynx
- Trachea, bronchioles, alveoli
Functions of respiratory system (3)
- Gaseous exchange
- Regulates acid-base balance of bodily fluids
- Enables sound production when air passes through vocal cords
Components of digestive system (2)
- Organs of GI tract :
- Mouth
- Pharynx
- oesophagus
- stomach
- small & large intestine - Accessory organs
- salivary glands
- gall bladder
- liver
- pancreas
Functions of digestive system (3)
- Physical & chemical breakdown of food
- Absorbs nutrients
- Eliminates solid waste
Components of urinary system (4)
- Kidneys
- Ureters
- Bladder
- Urethra
Functions of the urinary system (5)
- Produce, store & eliminate urine
- Eliminates metabolic waste
- Regulates volume & chemical composition of the blood
- Helps to maintain the acid-base balance of the body fluids
- Regulates production of red blood cells
Components of female reproductive system (4)
- Ovaries
- Uterus
- Fallopian tubes
- Vagina
Components of male reproductive system (4)
- Testes
- Epididymus
- Vas deferens
- Penis
Functions of the reproductive system (2)
- Gamete production
- Hormone release
- regulate reproduction & associated body changes during puberty