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ECPI Exam 3 (Ch 6-9) A&P Questions and Answers
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Dermis - Answer-Deepest layer of skin Stratum Corneum - Answer-Most superficial layer of the epidermis Function of skin - Answer-Excretes waste, secretory, protection, cosmetic scalp, armpit, face, arms, legs, pubic area, - Answer-common locations of hair growth Function of hair - Answe...

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  • October 26, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ecpi exam 3 ch 6 9 ap questions and answers
  • dermis answer deepest layer of skin

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ECPI Exam 3 (Ch 6-9) A&P Questions
and Answers
Dermis - Answer-Deepest layer of skin

Stratum Corneum - Answer-Most superficial layer of the epidermis

Function of skin - Answer-Excretes waste, secretory, protection, cosmetic

scalp, armpit, face, arms, legs, pubic area, - Answer-common locations of hair growth

Function of hair - Answer-sunshade, bug sensor, protection

Dermis - Answer-thickest layer of skin

smooth - Answer-The arrector pili muscle is made of ________muscle

UV radiation - Answer-stimulates melanocytes to make more melanin

Melanocytes - Answer-The epidermis contains

blood vessels - Answer-the dermis contains

skin blood vessels tend to dilate - Answer-in response to hyperthermia

skin blood vessels tend to constrict - Answer-in response to hypothermia

hypodermis or subcutaneous layer - Answer-not a true layer of skin

stratum basale - Answer-the deepest layer of the epidermis whose cells are alive and
actively mitotic

hair follicle - Answer-pouch-like depression (invagination) of the epidermis and dermis
where the hair root exist

apocrine - Answer-type of sweat gland found in the axillary and groin region whose
secretions are metabolized by bacteria thereby creating body odor

Eccrine - Answer-the most common type of sweat gland whose secretions are watery-
like and are mainly involved with thermoregulation

muscle function - Answer-move body parts, generate body heat, protect against trauma

perimysium - Answer-connective tissue layer that surrounds fascicles in a muscle

, fascicles - Answer-bundles of muscle fibers

myofibrils - Answer-organelle that is a bundle of actin and myosin filaments

T-tubule - Answer-Sarcolemma invagination that helps internalize the muscle impulse

Sarcoplasmic reticulum - Answer-Organelle that stores calcium until it is needed

myosin - Answer-the thick filament

troponin - Answer-the regulatory protein that senses calcium

Motor unit - Answer-one motor neuron and ALL the MUSCLE FIBERS it controls

sarcomere - Answer-muscle fiber unit that extends from one z-line to the next z-line

I-band - Answer-the light band

Acetycholine - Answer-the neurotransmitter that stimulates skeletal muscles to contract

ATP - Answer-Powers muscle contraction

acetylcholinesterase - Answer-enzyme that destroys the neurotransmitter of the skeletal
muscle contraction

slow twitch - Answer-muscle found in marathon runners

slow twitch - Answer-type of muscle that is fatigue-resistant due to high myoglobin and
high mitochondria content

Increase frequency of twitches and recruit more motor units - Answer-to increase
muscle tension we can

origin - Answer-muscles anchoring point into bone that does not move (immovable)

antagonists - Answer-muscle that opposes movement of the prime mover

atrophy - Answer-muscle wasting away

fatigue - Answer-lactic acid build up may eventually lead to muscle

creatinine phosphate - Answer-recharges ATP from ADP

endomysium - Answer-CT layer that immediately surrounds individual muscle cells
(fibers)

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