Ch.6 Human body Flashcards
Coronal (frontal)
Front and back
Transverse (axial)
Top and bottom
Sagittal (lateral)
Left and right
Midsagittal (midline)
Left and right (equal halves)
bones in body
206
axial skeleton
longitudinal axis, from skull to tailbone (coccyx)
-skull, facial bones, thoracic cage, vertebral column
appendicular skeleton
upper and lower extremities, and connection points
joint
two bones meet
ligaments
bone to bone
tendons
bone to muscle
cartilage
cushion between bones
cranium
frontal, temporal, parietal, occipital, ethmoid, sphenoid bones
skull
28 bones
cranium, facial (14) , ear bones (3)
foramen magnum
opening at base of cranium, passageway for spinal cord to connect with brain
radius
ulna
R: lateral
U: medial
pelvic girdle
2 hip bones (coxae), sacrum, coccyx
coxa formed by illium, ischium, pubis
acetabulum
hip joint
tibia
medial side
shinbone
larger
fibula
lateral side
Muscle types
skeletal, smooth, cardiac (myocardium)
Musculoskeletal physiology
Movement
Generate heat
protects underlying structures
Heart pumps
Left: high-pressure to body
Right: low-pressure to lungs
Cardiac Output (CO)
Amount of blood moved in 1 minute
CO=HR x SV
Heart rate x stroke volume
Stroke volume
Amount of blood moved in 1 beat
Aorta
main artery leaving back left side of heart; carries oxygenated blood to body
Aorta-arteries-aterioles
Central pulses
Carotid
Femoral
Peripheral pulses
Radial
Brachial
Posterior tibial
Dorsalis pedis (top of foot)
Systemic Vascular Resistance (SVR)
amount of force exerted on blood by vasculature
Spleen
Solid organ
LUQ
Lymphatic
Circulatory support: screens blood, removes old/damaged cells
Source of severe internal bleeding
Blood Pressure
force of circulating blood against walls of arteries
Systole: left ventricle contracts
Diastole: ventricle relaxes and refills with blood
Mean arterial pressure (MAP)
MAP=(HRxSV) x SVR
=CO x SVR
Central nervous system (CNS)
brain and spinal cord
Peripheral nervous system (PNS)
Nerves outside brain and spinal cord that link CNS to organs
PNS divisions
Somatic nervous system: (voluntary control)
Autonomic nervous system: automatic: digestion, dilation, sweating
Brain divisions
Cerebrum
Cerebellum
Brainstem
Cerebrum
Largest portion 3/4
Higher brain function: vision, speech, reasoning + learning, motor control
2 hemispheres, each with 4 lobes: frontal, parietal, temporal, occiptal
Cerebellum
Control balance, muscle coordination, posture
Brainstem
Involuntary life-supporting function
HR, breathing, temp, digestion, wake/sleep
-midbrain, pons, medulla oblongata
Autonomic nervous system divisions
Sympathetic: fight or flight-increase activity: fast HR, increase energy production
Parasympathetic: slow activity: rest and digest, slow HR + contraction
Sensory Nerves
Motor Nerves
S: carry info to brain
M: carry info from brain to muscles
Integumentary system
Protect body from environment, maintain temp, transmit sensory information