Lecture 30 Mammalian Organ Systems Flashcards
The cell is the
Building block of life that performs specific functions
Tissues are
Collections of the same cells (or multiple cell types of the same origin) that perform specific functions
Tissues can be
Microscopic and macroscopic
Organs contain ___ and often have ____
Several tissue types; multiple functions
Discrete macroscopic structures
Ie. Organs, can see/hold them
Organ systems consist of
Multiple organs that combine to perform one primary function
Diffuse
Ie. harder to identify (ex. Immune system, endocrine)
Musculoskeletal System is comprised of (3)
-bones
-joints
-skeletal muscle
Primary function of musculoskeletal system is
Movement and locomotion
Secondary functions of the musculoskeletal system (5)
-support body
-protect organs
-generate heat through contraction of muscles
-calcium metabolism
-haematopoiesis
Haematopoiesis is
The generation of blood cells within the bone marrow
Cardiovascular system is comprised of
-heart
-blood vessels
Blood flow in heart goes
Into the right side and out of the left
Primary function of cardiovascular system is
Provision of nutrition and oxygen to cells
Secondary functions of the cardiovascular system include (4)
-transport hormones (endocrine)
-removal of CO2 and other waste products
-transport of immune cells around body (immune)
-temperature regulation through vascular thermoregulation (ie. superficial blood vessels contract or restrict)
Nervous System is comprised of (4)
-brain
-spinal cord
-ganglia
-cranial and peripheral nerves
Three systems of the nervous system are
-Central Nervous System (CNS)
-Peripheral Nervous System (PNS)
-Autonomic Nervous System (ANS)
The CNS is comprised of
-brain
-spinal cord
The PNS is comprised of
-afferent nerves
-efferent nerves
ANS is divided into
Sympathetic and Parasympathetic
Primary functions of the nervous system
Sensing the environment and coordinating a response
Secondary functions of the nervous system (2)
-thinking/decision making (ie. cognition)
-regulation of many functions through ANS (ex. Respiration, cardiac function, etc)