Ch 1b Flashcards
Structural organization of the human body
Chemical → cell → tissue → organ → organ system → organism
Chemical
Atoms combine to form molecules
Cell
Molecules form organelles t diff organelles form cells
Tissues
Cells and surrounding material form tissues
tissues = epithelial/ connective muscular l nervous
Organ
2 or more kinds of tissues combine to form organs
Organ systems
Various Organs come together to form an organ system =ll systems in the body
Organism
’ All organ systems together form a organism
The organ systems
- Skin hair = integumentary system
- Skeletal system
- Muscular system
4 nervous system
5 endocrine system
6 cardiovascular system
7 system
8 respiratory system
9 urinary system
10 digestive system
11reproductive system
Why is the endocrine system special? And how do they survive
Only system in the body whose organs = not connected.
They can function w/o being connected because the hormones they make they are released through the blood stream
Characteristics of living organism
Organization= specific interrelationships work together
Metabolism = ability of the organism to make and use energy
Growth and development
Responsiveness = ability to determine change in the environment
Regulation = maintain homeostasis
Reproduction
Body cavities
Posterior aspect
Ventral cavity
Posterior aspect
Completely encased in bone and are physically and developmentally diff from the ventral cavity
- includes= cranial cavity skull protects the brain and vertebral protects the spinal cord
- diff btw posterior aspect t ventral is the ventral subdivisions are lined with serous membrane and posterior has meninges
Meninges
Surround the brain and spinal cord
Outside of the meninges is the bone
Ventral cavity
’ anteriorly placed and partitioned by the diaphragm into thorastic cavity and abdomen pelvic cavity→
Tharastic cavity
Heart / lungs / thymus gland / vagus l trachea covered w serous membrane
Btw serous membrane = serous cavity
