Which statements describe intercalated discs? Intercalated discs are found between cardiomyocytes. Intercalated discs allow synchronized contraction...
Which statements describe intercalated discs?
Intercalated discs are found between cardiomyocytes.
Intercalated discs allow synchronized contraction of cardiac muscle cells.
Intercalated discs contain desmosomes.
Intercalated discs occur in smooth muscle.
Intercalated discs prevent direct communication between cells.
Homework Answers
Intercalated discs are found between cardiomyocytes, they allow synchronised contractions of cardiac muscle cell, they contain desmosomes.
They also contain gap junctions for rapid communication between cells.
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Which statements describe intercalated discs?
Intercalated discs are found between cardiomyocytes.
Intercalated discs allow synchronized contraction...
23. Which of the following is true? a. Skeletal muscle has striations and intercalated discs b....
23. Which of the following is true? a. Skeletal muscle has striations and intercalated discs b. Smooth muscles have no nuclei. c. Organ systems function completely independently of each other. 0 d. Unlike CT scans, regular X-rayd e. MRI uses magnets, but no radiation. 24. Which of the following is untrue? a. Epidermis contains stratified squamous epithelium. b. Cartilage is found on the surface of bones in joints. c. Intercalated discs are located between the vertebrae. d. Epithelial tissue is...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z discs move closer together as the myosin heads move toward the plus ends of the actin filaments. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system causes Ca2+ to flow into the sarcoplasmic reticulum, triggering a muscle contraction. An action potential in the muscle cell plasma membrane leads to voltage-gated calcium channels...
please answer within 5 mins! 46) Which of the following is referred to as the period...
please answer within 5 mins!
46) Which of the following is referred to as the period of lost excitability in skeletal muscle fibers? a) refractory period b) contraction period c) latent period d) relaxation period e) wave summation 47) Increasing the number of active motor units within a skeletal muscle is called a) wave summation. b) fused tetanus. c) motor unit recruitment. d) muscle tone. e) flaccidity. 48) Which of the following microscopic structures is only found in the cardiac...
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...
Directly responsible for the power stroke associated with contraction Release of O a Natt release of...
Directly responsible for the power stroke associated with contraction Release of O a Natt release of Phosphate and ADP from myosin Dhead o Binding of binding of Phosphate and ADP to actin d, head QUESTION 16 Can lead to muscle atrophy a. Limb cast b. space flight Oc.sedentary life style d. all of above QUESTION 17 Highest concentration of Car+ voltage gated channels in which a cardiac caveolae b. skeletal muscle s intercalated disk d. Smooth muscle QUESTION 18 Muscle...
Which statements describe the action potential in cardiomyocytes (heart muscle cells)? Depolarization stimulates voltage-gated, slow calcium...
Which statements describe the action potential in cardiomyocytes (heart muscle cells)? Depolarization stimulates voltage-gated, slow calcium channels to open. The absolute refractory period can last for about 200 ms. Rapid sodium influx causes the membrane to rapidly depolarize. Repolarization occurs immediately after the initial depolarization.
No explanation just answer please. 36. Which connective tissue has a fluid matrix? A. adipose B....
No explanation just answer please.
36. Which connective tissue has a fluid matrix? A. adipose B. blood C. cartilage D. dense connective tissue E. loose connective tissue 37. What feature of cardiac muscle helps the cells coordinate their contraction as single unit? A. fused cells with multiple nuclei B. covalent bonds between actin and myosin molecules C. intercalated disks rich in gap junctions D. large numbers of motor neurons 38. A scientist is trying to coax stem cells to differentiate...
Answer the following questions. 1. Describe the difference observed between elastic and hyaline cartilage. 2. In...
Answer the following questions. 1. Describe the difference observed between elastic and hyaline cartilage. 2. In an osteon, where can you find the lacuna? 3. Which of the tissues you have observed has long narrow lacuna surrounded by long narrow fibers going all in the same direction? 4. When looking at a slide you see what appears to be open spaces with small cells in it; this all is surrounded by layers of connective tissue. What type of tissue is...
HUMAN ANATOMY UNIT ONE STUDY G 22. Movement away from the 23. Movement toward the 24....
HUMAN ANATOMY UNIT ONE STUDY G 22. Movement away from the 23. Movement toward the 24. Movement 25. Movement Antial Language and Basics 10. Which of the following muscles does NOT strengthen the shoulder joint a) Tens Minor d) subscapularis b) Supraspinatus c) pectoralis minor c.) infraspinatus 11. An example of a diarthrotic synchondrosis is a) the epiphyseal plates d) the knee joint b) the joint between the sternum and the fourth c ) none of these, for such a...
Which of the following statements concerning double covalent bonds is correct? They are found only in...
Which of the following statements concerning double covalent bonds is correct? They are found only in molecules that contain S or O. They are found only in molecules that contain a coordinate covalent bond. They occur only between atoms containing 4 valence electrons. They always involve the sharing of 2 electron pairs.
23. Which of the following is true? a. Skeletal muscle has striations and intercalated discs b. Smooth muscles have no nuclei. c. Organ systems function completely independently of each other. 0 d. Unlike CT scans, regular X-rayd e. MRI uses magnets, but no radiation. 24. Which of the following is untrue? a. Epidermis contains stratified squamous epithelium. b. Cartilage is found on the surface of bones in joints. c. Intercalated discs are located between the vertebrae. d. Epithelial tissue is...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z discs move closer together as the myosin heads move toward the plus ends of the actin filaments. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system causes Ca2+ to flow into the sarcoplasmic reticulum, triggering a muscle contraction. An action potential in the muscle cell plasma membrane leads to voltage-gated calcium channels...
please answer within 5 mins!
46) Which of the following is referred to as the period of lost excitability in skeletal muscle fibers? a) refractory period b) contraction period c) latent period d) relaxation period e) wave summation 47) Increasing the number of active motor units within a skeletal muscle is called a) wave summation. b) fused tetanus. c) motor unit recruitment. d) muscle tone. e) flaccidity. 48) Which of the following microscopic structures is only found in the cardiac...
Directly responsible for the power stroke associated with contraction Release of O a Natt release of Phosphate and ADP from myosin Dhead o Binding of binding of Phosphate and ADP to actin d, head QUESTION 16 Can lead to muscle atrophy a. Limb cast b. space flight Oc.sedentary life style d. all of above QUESTION 17 Highest concentration of Car+ voltage gated channels in which a cardiac caveolae b. skeletal muscle s intercalated disk d. Smooth muscle QUESTION 18 Muscle...
Which statements describe the action potential in cardiomyocytes (heart muscle cells)? Depolarization stimulates voltage-gated, slow calcium channels to open. The absolute refractory period can last for about 200 ms. Rapid sodium influx causes the membrane to rapidly depolarize. Repolarization occurs immediately after the initial depolarization.
No explanation just answer please.
36. Which connective tissue has a fluid matrix? A. adipose B. blood C. cartilage D. dense connective tissue E. loose connective tissue 37. What feature of cardiac muscle helps the cells coordinate their contraction as single unit? A. fused cells with multiple nuclei B. covalent bonds between actin and myosin molecules C. intercalated disks rich in gap junctions D. large numbers of motor neurons 38. A scientist is trying to coax stem cells to differentiate...
HUMAN ANATOMY UNIT ONE STUDY G 22. Movement away from the 23. Movement toward the 24. Movement 25. Movement Antial Language and Basics 10. Which of the following muscles does NOT strengthen the shoulder joint a) Tens Minor d) subscapularis b) Supraspinatus c) pectoralis minor c.) infraspinatus 11. An example of a diarthrotic synchondrosis is a) the epiphyseal plates d) the knee joint b) the joint between the sternum and the fourth c ) none of these, for such a...
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