he T wave of an electrocardiogram (ECG) should be associated with electrical cur
ID: 98676 • Letter: H
Question
he T wave of an electrocardiogram (ECG) should be associated with
electrical current flowing through the atria
electrical current flowing through the ventricles
relaxation of the atria
relaxation of the ventricles
The _______ of the male is similar to the ______ of the female because they both contain erectile tissue
testicles; vagin a
bulbourethral gland; cervix
penis; clitoris
penis; vagin a
Which endocrine gland is important for development of the immune system?
ovaries
pineal gland
thymus
adrenal medulla
Which of the following is secreted by the anterior pituitary?
antidiuretic hormone (ADH)
T3/T4
thyroid stimulating hormone (TSH)
cortisol
glucagon
Which of the following hormones acts to increase metabolic rate?
oxytocin
aldosterone
T3/T4
antidiuretic hormone (ADH)
When a muscle cell is relaxing, __________ covers the myosin binding sites on the actin filament.
tropomyosin
the Z-line
the M-line
toponin
Aldosterone
increases blood volume
decreases blood pressure
is secreted by the testes
stimulates glycogenolysis
all of the above
Which of the following myofilaments is referred to as the thick filament and does not attach directly to the Z-line?
actin
H-zone
myosin
M-line
Which type of muscle tissue is found lining hollow organs such as the intestines or the stomach?
cardiac
skeletal
smooth
Damage to the cerebellum would result in
death
poor coordination and balance
personality change
inability to form new memories
Explanation / Answer
1) Relaxation of Ventricles
T wave is referred to as the repolarization period of the ventricles because it represents the period in which the cardiac muscle cells of the heart can relax and prepare for the next contraction.
2) Penis,Vagina
Erectile tissue is found in the male penis, the female vagina
3)Thymus is essential in immune system
Thymus produces T cells which act as antibodies and produces B cells
4) Thyroid-stimulating hormone
A thyroid-stimulating hormone (TSH) blood test is used to check for thyroid gland problems. TSH is produced when the hypothalamus releases a substance called thyrotropin-releasing hormone (TRH). TRH then triggers the pituitary gland to release TSH.
5) T3/T4 act to increase metabolic rate
The thyroid hormones, triiodothyronine (T3) and its prohormone, thyroxine (T4) act to increase the basal metabolic rate
6)Tropomyosin
Molecules of tropomyosin cover the myosin-binding sites on the actin molecules when the muscle fibers are relaxed.
7)Aldosterone Increase blood volume
Increase blood volume and thereby increasing high blood pressure.
8) Myosin does not attach directly to Z line
Myosin attach to acting filaments and actins attaches to Z line
9)Smooth Muscle is present in stomach
The most important is the ability to compress, contract or extend ducts, organs, tubes and sacs. The stomach contains the circular smooth layer inside and the longitudinal smooth layer outside. These two layers help in the proper digestion and metabolism of ingested foodstuffs taken in by the body.
10) Damage to the cerebellum would result in poor coordination and balance
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