190 likes | 517 Views
Lecture 1 Intro to Anatomy and Physiology Body regions organ systems body cavities biological molecules. Characteristics of all life forms. O rganization R eproduction C hange – grow, use energy A dapt populations respond to their environment – They Evolve. What is anatomy? Anatomy
E N D
Lecture 1Intro to Anatomy and PhysiologyBody regionsorgan systemsbody cavitiesbiological molecules
Characteristics of all life forms O rganization R eproduction C hange – grow, use energy A dapt populations respond to their environment – They Evolve
What is anatomy? • Anatomy • Versus physiology • Levels of organization
Eleven Organ Systems:What does each do?How are they studied?Gross anatomycytologyhistologyinteractions - homeostasis
Homeostasis • The maintenance of a stable internal environment of a living organism within life sustaining, physiological limits. • Involve Negative Feedback loops which require: • Sensor or receptor • Control center • effector
Negative & Positive Feedback Loops • Negative feedback loop • original stimulus reversed • most feedback systems in the body are negative • used for conditions that need frequent adjustment • body temperature, blood sugar levels, blood pressure • What happens if control fails? • Positive feedback loop • original stimulus intensified • seen during normal childbirth
Dorsal Cavities • Brain is enclosed in the _______________ • Spinal Cord in enclosed in _____________ • Ventral Cavities • Above the diaphragm:_________________ • Divided into/contains:_____________________ • Protected by rib cage • Below the diaphragm: _________________ • Superior part – contains stomach + liver + others: • Inferior part – within coxal bones:_____________
Body Regions Axial: refers to _________________ Appendicular: refers to _____________ Body region names Relate to anatomical names Part of the jargon See p 18 and fill-in exercise in lab manual
Planes and Sections • Sagital • Mid-sagital • Para-sagital • Frontal • Transverse
Directional Terms • Right - Left • Medial – Lateral • Distal – Proximal • Dorsal – Ventral = Anterior – Posterior • Superior – Inferior = Cranial – Caudal • Superficial - Deep
A plane which divides the body into left and right parts would be a ___________. • A ____________ plane separates dorsal and ventral parts of the body. • The stomach is ___________ to the diaphragm. • The carpal region is ___________ to the radius and ulna. • The knee is __________ to the tibia. • The urinary bladder is located in the __________ cavity. • Review others from 17-20 in lab manual
Scientific Method – How we know what we know • Observation leads to question – why, what is relationship? … etc. • Possible answer – explanation = ___________ • Test of explanation = _______________ • Test may support or reject explanation • Theory – a generally accepted concept • Major theories in biology: