Check all those that are characteristic of cardiac muscle. 1. Cells are striated 2. Cells are...
Check all those that are characteristic of cardiac muscle.
1. Cells are striated
2. Cells are structurally and functionally separated from one another
3.Gap junctions join adjacent cells
4.Requires external stimulation to produce a contraction
Homework Answers
1. Cells are striated ----------> TRUE (Cardiac muscle cells are striated and can contract)
2. Cells are structurally and functionally separated from one another -------> FALSE (Cardiac muscle cells are interconnected (branched))
3. Gap junctions join adjacent cells --------> TRUE (Gap junctions are the one of the components of intercalated disks of cardiac muscle; these gap junctions allow passage of action potentials).
4. Requires external stimulation to produce a contraction ------> FLASE (automaticity is the characteristic of cardiac muscle cells).
Add Answer to:
Check all those that are characteristic of cardiac muscle.
1. Cells are striated
2. Cells are...
Question 21 2 pts While watching TV last night, the detectives referred to a victim as...
Question 21 2 pts While watching TV last night, the detectives referred to a victim as a stiff. The medical examiner corrected the detective and stated that the proper description is rigor mortis. How does this process occur in the human body? Tissues harden due to a lack of circulation. Blood coagulates in the body causing stiffness. Without ATP, muscles remain fixed in their last state of contraction. With a lack of nerve signals, the body tenses. 10:54 il LTE...
Please answer all parts. Thanks in advance 19) Which statement(s) is(are) NOT true regarding cardiac muscle?...
Please answer all parts. Thanks in advance
19) Which statement(s) is(are) NOT true regarding cardiac muscle? Choose ALL that apply. (2.5 pts) a) Autorhythmic cells do not contribute significantly to the force of heart contraction because they do not contain many myofibrils. b) Cardiac muscle consists of autorhythmic fibers and contractile fibers. c) Cardiac muscle is similar to skeletal muscle since t contains thick and thin filaments, d) Cardiac muscle is similar to skeletal muscle in that the muscle fibers...
1) Check all that are components of the sympathetic innervation of the heart. Check All That...
1) Check all that are components of the sympathetic innervation of the heart. Check All That Apply Cervical sympathetic ganglion Spinal cord Spinal cord Vagus nerve (CN X) Cardiac nerve Sympathetic postganglionic axon 2) Check all that occur during ventricular contraction. Check All That Apply The AV valves open to allow blood to enter the ventricles from the atria. The semilunar valves remain closed to prevent backflow of blood into the ventricles. The semilunar valves open to allow blood to...
66) The successful transmission of a nervous impulse to a muscle fiber leads to the release...
66) The successful transmission of a nervous impulse to a muscle fiber leads to the release of Calcium (Ca2+) from the Sarcoplasmic Reticulum. The role of Ca2+ in muscle contraction is: Bind to myosin, which cleaves ATP such that energy can be input into the myosin “heads”, allowing it to perform a power stroke needed to move actin. Ca2+ acts in a process that breaks up actin filaments, removing subunits to make them shorter and thus leading to the contraction...
10? ENDO 4 E R M 7 P R A um A P 1 10 L...
10?
ENDO 4 E R M 7 P R A um A P 1 10 L р 2 F C A AR с | R 15 A A L 16 S TIC T N M M 11 S 14 NI SIIS E M T RIOVENT A b M p 19 PT DRO 4S O S N с 18 MYOCA I и M P S 4 M M 19 MIR MLB ACROSS: 3: simple squamous lining of chamber walls and heart...
in cardiac 5. Cell-cell communication junctions in plants are called and muscle cells (animal). A. plasmodesmata,...
in cardiac 5. Cell-cell communication junctions in plants are called and muscle cells (animal). A. plasmodesmata, anchoring junction B. plasmodesmata gap junction C. stomata; anchoring junction D. stomata; conjunction junction Estomata; gap junction 6. Actin is found in A. cellulose B. intermediate filament C.microfilament D. microtubule E. cristae 7. Based on the endosymbiont theory which was once a free living prokaryote? A. nucleus B. Golgi C. Mitochondria D. rough endoplasmic reticulum E. B and D 8. Active transport A. occurs...
In addition to glucose, a muscle can also use as second source of energy for sustained...
In addition to glucose, a muscle can also use as second source of energy for sustained exercise? Which of the following is NOT true of action potential frequency? Creatine phosphate in the muscle is used to Select one: O a. Regenerate ATP from ADP b. Breakdown of glucose to make Select one: O a. Creatine phosphate O b. Fatty acids O c. insulin ATP Select one: O a. A subthreshold stimulus will not produce an action potential O b. A...
True or False: The striations in skeletal muscle are formed by the arrangement of thick and...
True or False: The striations in skeletal muscle are formed by the arrangement of thick and thin filaments. 2. True or False: In skeletal muscle cells, the sarcoplasmic reticulum is continuous with the sarcolemma. 3. The interval between two Z lines is called a ________________. 4. At a neuromuscular junction, the space between the plasma membrane of the synaptic terminal and the motor end plate is the __________________. 5. An action potential (electric impulse) is transferred from a...
1. List the three sources of energy that muscles use during contraction. Which one is the...
1. List the three sources of energy that muscles use during contraction. Which one is the most efficient? Which one is the least efficient? 2. Describe two ways in which the lack of ATP production results in rigor mortis. 3. List and describe each step of a muscle contraction, starting from a signal from the brain and ending with crossbridge cycle. 4. List the 4 different blood types. For each blood type label what blood type can be donated to...
1. (2 points) If you were given a microscope slide with an unknown type of muscle...
1. (2 points) If you were given a microscope slide with an unknown type of muscle tissue, what features would you look for to determine whether the tissue was smooth muscle or skeletal muscle? Give 2 characteristics that would allow you to distinguish between these tissue types. Be sure to state which type of muscle has the characteristics you describe.) 2. Give 3 examples of different types of connective tissues found within the body and briefly note one function of...
Question 21 2 pts While watching TV last night, the detectives referred to a victim as a stiff. The medical examiner corrected the detective and stated that the proper description is rigor mortis. How does this process occur in the human body? Tissues harden due to a lack of circulation. Blood coagulates in the body causing stiffness. Without ATP, muscles remain fixed in their last state of contraction. With a lack of nerve signals, the body tenses. 10:54 il LTE...
Please answer all parts. Thanks in advance
19) Which statement(s) is(are) NOT true regarding cardiac muscle? Choose ALL that apply. (2.5 pts) a) Autorhythmic cells do not contribute significantly to the force of heart contraction because they do not contain many myofibrils. b) Cardiac muscle consists of autorhythmic fibers and contractile fibers. c) Cardiac muscle is similar to skeletal muscle since t contains thick and thin filaments, d) Cardiac muscle is similar to skeletal muscle in that the muscle fibers...
10?
ENDO 4 E R M 7 P R A um A P 1 10 L р 2 F C A AR с | R 15 A A L 16 S TIC T N M M 11 S 14 NI SIIS E M T RIOVENT A b M p 19 PT DRO 4S O S N с 18 MYOCA I и M P S 4 M M 19 MIR MLB ACROSS: 3: simple squamous lining of chamber walls and heart...
in cardiac 5. Cell-cell communication junctions in plants are called and muscle cells (animal). A. plasmodesmata, anchoring junction B. plasmodesmata gap junction C. stomata; anchoring junction D. stomata; conjunction junction Estomata; gap junction 6. Actin is found in A. cellulose B. intermediate filament C.microfilament D. microtubule E. cristae 7. Based on the endosymbiont theory which was once a free living prokaryote? A. nucleus B. Golgi C. Mitochondria D. rough endoplasmic reticulum E. B and D 8. Active transport A. occurs...
In addition to glucose, a muscle can also use as second source of energy for sustained exercise? Which of the following is NOT true of action potential frequency? Creatine phosphate in the muscle is used to Select one: O a. Regenerate ATP from ADP b. Breakdown of glucose to make Select one: O a. Creatine phosphate O b. Fatty acids O c. insulin ATP Select one: O a. A subthreshold stimulus will not produce an action potential O b. A...
1. (2 points) If you were given a microscope slide with an unknown type of muscle tissue, what features would you look for to determine whether the tissue was smooth muscle or skeletal muscle? Give 2 characteristics that would allow you to distinguish between these tissue types. Be sure to state which type of muscle has the characteristics you describe.) 2. Give 3 examples of different types of connective tissues found within the body and briefly note one function of...
Most questions answered within 3 hours.
-
The x component of the velocity of an object vibrating
along the x-axis obeys the equation...
asked 7 minutes ago -
A junction box contains two trade size 2 raceways on the left
side, and two trade...
asked 40 minutes ago -
Atmospheric Mass
Venus and Earth have about the same mass and radius, but the
atmospheric pressure...
asked 1 hour ago -
5. Discuss the use of fault tree analysis (FTA) for risk
assessment (maximum one paragraph).
asked 2 hours ago -
Given that a sample of aluminium oxide has a Young's modulus of
393 GPa and a...
asked 3 hours ago -
At a certain temperature, the equilibrium constant, Kc, for this
reaction is 53.3.
H2(g)+I2(g)−⇀↽−2HI(g)Kc=53.3
At this...
asked 5 hours ago -
Question1 ) The STL provides similiar classes called stack and
queue, both of which gave functions...
asked 6 hours ago -
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 6 hours ago -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 8 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 8 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 8 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 9 hours ago