Rio Salado BIO 201 Anatomy & Physiology Final QUESTIONS & ANSWERS 100% CORRECT!!
4 views 0 purchase
Course
Rio Salado BIO 201 Anatomy & Physiology
Institution
Rio Salado BIO 201 Anatomy & Physiology
What is the connective tissue covering that encloses the sarcolemma of an individual muscle fiber?
A) epimysium
B) perimysium
C) endomysium
D) periosteum - ANSWERC) endomysium
What is a fascicle?
A) muscle
B) bundle of muscle fibers enclosed by a connective tissue sheath
C) bundle of ...
Rio Salado BIO 201 Anatomy &
Physiology Final QUESTIONS &
ANSWERS 100% CORRECT!!
What is the connective tissue covering that encloses the sarcolemma of an individual
muscle fiber?
A) epimysium
B) perimysium
C) endomysium
D) periosteum - ANSWERC) endomysium
What is a fascicle?
A) muscle
B) bundle of muscle fibers enclosed by a connective tissue sheath
C) bundle of myofibrils
D) group of myofilaments - ANSWERB) bundle of muscle fibers enclosed by a
connective tissue sheath
What are the differences, if any, in the composition for thick and thin myofilaments?
A) Thin filaments contain actin, troponin and attach to the Z disc.
B) Thick filaments contain ATPases, myosin and does not lie in the I band.
C) Thick and thin filaments generally have the same composition.
D) Both A and B are correct. - ANSWERD) Both A and B are correct. Thin filaments
contain actin, troponin and attach to the Z disc. Thick filaments contain ATPases,
myosin and does not lie in the I band.
What are the sites called where the motor nerve impulse is transmitted from the
nerve endings to the skeletal muscle cell membranes?
A) neuromuscular junctions
B) sarcomeres
C) myofilaments
D) Z discs - ANSWERA) neuromuscular junctions
What is a contraction elicited by a single brief stimulus called?
A) a twitch
B) wave summation
C) multiple motor unit summation
D) fused tetanus - ANSWERA) a twitch
What is the function of T tubules in muscle contraction?
,A) make and store glycogen
B) release CA2+ into the cell interior and then pick it up again
C) transmit action potential deep into the muscle cells
D) form proteins - ANSWERC) transmit action potential deep into the muscle cells
What is a smooth sustained contraction called that result from very rapid stimulation
of the muscle, in which no relaxation is seen?
A) a twitch
B) wave summation
C) multiple motor unit summation
D) fused tetanus - ANSWERD) fused tetanus
What is the neurotransmitter released by somatic motor neurons called?
A) acetylcholine
B) acetylcholinesterase
C) norepinepherine - ANSWERA) acetylcholine
What are the ions that enter the muscle cell during action potential generation
called?
A) calcium ions
B) chloride ions
C) sodium ions
D) potassium ions - ANSWERC) sodium ions
What is the special function of Myoglobin in muscle tissue?
A) break down glycogen
B) is a contractile protein
C) holds a reserve supply of oxygen in the muscle - ANSWERC) holds a reserve
supply of oxygen in the muscle
Aerobic exercise results in all of the following except?
A) increased cardiovascular system efficiency
B) more mitochondria in the muscle cells
C) increased size and strength of existing muscle cells
D) increased neuromuscular system coordination - ANSWERC) increased size and
strength of existing muscle cells
What is the smooth muscle type found in the walls of digestive and urinary system
organs that exhibit gap junctions and pacemaker cells?
A) multiunit smooth muscle
B) single-unit smooth muscle - ANSWERB) single-unit smooth muscle
Which area of the sarcomere consists of just myosin filaments?
,A) I bands
B) H zone
C) A bands
D) M line
E) Z disc - ANSWERB) H zone
Which area of the sarcomere consists of overlapping actin and myosin filaments?
A) I bands
B) H zone
C) A bands
D) M line
E) Z disc - ANSWERC) A bands
Cross bridges are part of which myofilaments?
A) myosin (thick filoments)
B) actin (thin filaments) - ANSWERA) myosin (thick filoments)
Upon contraction the H band and the ________ band gets shorter?
A) A bands
B) I bands - ANSWERB) I bands
Characteristics of isometric contractions include all of the following except?
A) shortening
B) increased muscle tension throughout the contraction phase
C) absence of shortening
D) use in resistance training - ANSWERA) shortening
During muscle contraction, ATP is provided by (A) a coupled reaction of creatine
phosphate with ADP (B) aerobic respiration of glucose, and (C) anaerobic
glycolysis? (multiple answers may apply)
1) Provides ATP fastest?
2) Does/do not require that oxygen be available?
3) Highest yield of ATP per glucose molecule?
4) Results in the formation of lactic acid?
5) Has carbon dioxide and water products?
6) Most important in endurance sports? - ANSWER1) A) a coupled reaction of
creatine phosphate with ADP
2) A) a coupled reaction of creatine phosphate with ADP
and C) anaerobic glycolysis
3) B) aerobic respiration of glucose
4) C) anaerobic glycolysis
5) B) aerobic respiration of glucose
6) B) aerobic respiration of glucose
, When a muscle is not contracting, the binding sites on actin are blocked by what
molecular complex?
A) dysotrophin
B) titan
C) troponin/tropomyosin complex
D) myomesin - ANSWERC) troponin/tropomyosin complex
The sarcoplasmic reticulum stores _________ ions?
A) calcium ions
B) chloride ions
C) sodium ions
D) potassium ions - ANSWERA) calcium ions
A muscle that assists an agonist by causing a like movement or by stabilizing a joint
over which an agonist acts is
A) antagonist
B) prime mover
C) synergist
D) agonist - ANSWERC) synergist
A muscle in which the fibers are arranged at an angle to a central longitudinal tendon
has a ________ arrangement.
A) circular
B) longitudinal
C) pennate
D) parallel - ANSWERC) pennate
Match the muscle names to the facial muscles described.
a. frontal belly of epicranius b. Orbicularis oculi c. Occipital belly of epicranius d.
Zygomaticus e. Orbicularis oris
1) squints the eye
2) raises the eyebrows
3) smiling muscle
4) puckers the lips
5) pulls the scalp posteriorly - ANSWERb. Orbicularis oculi 1) squints the eye
a. Frontal belly of epicranius 2) raises the eyebrows
d. Zygomaticus 3) smiling muscle
e. Orbicularis oris 4) puckers the lips
c. Occipital belly of epicranius 5) pulls the scalp posteriorly
The prime mover of inspiration is the
A) diaphragm
B) internal intercostals
C) external intercostals
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller papersbyjol. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
