Anatomy
Define Anatomy and Physiology
Anatomy: the study of the structure of the body parts and their relationship to one another
Physiology: the study of the function of body parts; how they work to carry out life-sustaining activities
what is histology?
the study of tissues
what is the principle role of melanin?
what are the 11 systems in the human body?
integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, reproductive
what are the 4 basic tissue types?
epithelial, connective, muscle and nervous tissue
what are the touch sensors of the epidermis called?
merkle cells
what are the 5 survival needs?
nutrients, oxygen, water, normal body temperature, appropriate atmospheric pressure
what does avascular mean?
without blood vessels
-receives nutrients from membrane surrounding it (perichondrium)
what are the 3 types of cancer?
1. basal cell carcinoma
2. squamous cell carcinoma
3. melanoma
define homeostasis
the maintenance of relatively stable internal conditions despite continuous changes in environment
what are the main functions of epithelial tissue?
protection, absorption, filtration, excretion, secretion, sensory reception
when does a cut bleed? (which layer of the skin must be cut)
in order for a cut to bleed, the injury must penetrate at least the dermis, because above this level there are no blood vessel nerves
what are the requirements for life?
1. maintaining boundaries
2. movement
3. responsiveness
4. digestion
5. metabolism
6. excretion
7. reproduction
8. growth
what are the 5 distinguishing characteristics of epithelial tissue?
1. polarity
2. specialized contacts
3. supported by connective tissues
4. avascular, but innervated
5. regeneration
in which order would a needle pierce your skin?
1. stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum spinosum
5. stratum basale